J reconstr Microsurg
DOI: 10.1055/s-0038-1676602
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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,
J reconstr Microsurg
DOI: 10.1055/s-0038-1676602
Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.
Article in Thieme eJournals:
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J reconstr Microsurg
DOI: 10.1055/s-0038-1676538
Background The prevalence of obesity in the United States continues to grow and is estimated to affect over a quarter of the working-age population. Some studies have identified obesity as a risk factor for flap failure and complications in free flap-based breast reconstruction, but its clinical significance is less clear in nonbreast reconstruction. The role of obesity as a risk factor for failure and complications following lower extremity reconstruction has not been well described, and the limited existing literature demonstrates conflicting results. Methods The American College of Surgeons National Surgical Quality Improvement Program database was reviewed to identify patients undergoing local- or free-flap reconstruction of the lower extremity between 2010 and 2015. Preoperative variables and outcomes were compared between obese (body mass index ≥ 30) and nonobese patients. Chi-square analysis and Fisher's exact test were used for categorical variables and t-tests for continuous variables. Multivariate regression was performed to control for confounders. Results Univariate analysis of medical and surgical outcomes revealed that obese patients undergoing local flaps of the lower extremity required a significantly longer operative time (187.7 ± 123.2 vs. 166.2 ± 111.7 minutes; p = 0.003) and had significantly higher rates of superficial surgical site infection (SSI; 7.2% vs. 4.5%; p = 0.04). On univariate analysis, there were no significant differences in any postoperative outcomes between obese and nonobese patients undergoing microvascular free flaps of the lower extremity.On multivariate regression analysis, obesity was not an independent risk factor for superficial SSI (odds ratio = 1.01, p = 0.98) or increased operative time (β = 16.01, p = 0.14) for local flaps of the lower extremity. Conclusions Evaluation of a large, multicenter, validated and risk-adjusted nationwide cohort demonstrated that obesity is not an independent risk factor for early complications following lower extremity reconstruction, suggesting that these procedures may be performed safely in the obese patient population.
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In this 30th anniversary issue review, we focus on glucocorticoid modulation of limbic‐prefrontocortical circuitry during stress‐coping. This action of the stress hormone is mediated by mineralocorticoid receptors (MRs) and glucocorticoid receptors (GRs) that are co‐expressed abundantly in these higher brain regions. Via both receptor types, the glucocorticoids demonstrate, in various contexts, rapid nongenomic and slower genomic actions which coordinate consecutive stages of information processing. MR‐mediated action optimizes stress‐coping, while in complementary fashion, the memory storage of the selected coping strategy is promoted via GR. We highlight the involvement of adipose tissue in the allocation of energy resources to central regulation of stress reactions, point to still poorly‐understood neuronal ensembles in the prefrontal cortex that underlie cognitive flexibility critical for effective coping, and evaluate the role of cortisol as a pleiotropic regulator in vulnerability to, and treatment of, trauma‐related psychiatric disorders.
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Loss of efficacy of biological therapies in psoriatic patients is a well‐known event. Biological switching is common in clinical practice, especially in TNF‐α and IL‐12/23 inhibitors treatment1,2. Recently, anti‐IL‐17A drugs such as secukinumab have provided a new therapeutic opportunity
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in their recently published Research Letter, Burney et al.1 reported that the short‐term exposure of cultured SEB‐1 immortalized sebocytes to isotretinoin (13‐cis retinoic acid), the most powerful sebum‐suppressive drug promoting sebocyte apoptosis in acne patients, paradoxically increased lipogenesis and upregulated the expression of sterol regulatory element‐binding protein 1 (SREBP1)
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Publication date: Available online 22 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Warren R. Heymann
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Sanjeev Gupta, Ravi Shankar Jangra, Somesh Gupta
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Lieke C.J. van Delft, Patty J. Nelemans, Maud H.E. Jansen, Aimee H.M.M. Arits, Marieke H. Roozeboom, Myrurgia A. Hamid, Klara Mosterd, Nicole W.J. Kelleners-Smeets
There have been concerns that recurrences after noninvasive therapy for basal-cell carcinoma (BCC) transform into a 'more aggressive' histological subtype.
To evaluate the proportion of patients with a non-superficial treatment failure after noninvasive therapy for superficial BCC.
An observational study was performed using data from a single blind, non-inferiority, randomized controlled trial (March 2008-August 2010) with five year follow-up in patients with primary superficial BCC treated with methylaminolevulinate-photodynamic therapy (MAL-PDT), 5-fluorouracil or imiquimod. Data were used from 166 adults with a histologically confirmed treatment failure.
A non-superficial subtype was found in 64 of 166 treatment failures (38.6%). Proportions with a 'more aggressive' subtype than the primary tumor were 51.3% (38/74) for early and 28.3% (26/92) for later treatment failures (p=0.003). The proportion of 'more aggressive' early failures was significantly lower following imiquimod (26.3%) compared to MAL-PDT (54.8%, p=0.086) and 5-fluorouracil (66.7%, p=0.011).
There was limited information on the exact time of occurrence of treatment failures.
'More aggressive' treatment failures after noninvasive therapy for superficial BCC occur most often within the first three months post-treatment probably indicating underdiagnosis of 'more aggressive' components in the primary tumor rather than transformation.
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Ofer Reiter, Ilit Mimouni, Michael Gdalevich, Ashfaq Marghoob, Assi Levi, Emmilia Hodak, Yael Anne Leshem
Dermoscopy is a noninvasive technique for the diagnosis of skin lesions. Its accuracy for basal cell carcinoma (BCC) has not been systematically studied.
To systematically investigate the accuracy of dermoscopy for the diagnosis of basal cell carcinoma with comparison to naked eye examination.
A systematic review of studies reporting the accuracy of naked eye examination and dermoscopy for the diagnosis of BCC was conducted. A meta-analysis for sensitivity and specificity was performed using a bivariate mixed-effects logistic regression modeling framework.
Seventeen studies were identified. The pooled sensitivity and specificity of dermoscopy for the diagnosis of basal cell carcinoma were 91.2% and 95%, respectively. In studies comparing test performance, adding dermoscopy to naked eye examination improved sensitivity from 66.9% to 85% (p=0.0001), and specificity, from 97.2% to 98.2% (p=0.006). The sensitivity and specificity of dermoscopy were higher for pigmented than non-pigmented BCC. Sensitivity increased when dermoscopy was performed by experts and when the diagnosis was based on in-person dermoscopy as opposed to dermoscopic photographs.
Significant heterogeneity among studies with a medium-to-high risk of bias.
Dermoscopy is a sensitive and specific add-on tool for the diagnosis of basal cell carcinoma. It is especially valuable for pigmented BCC.
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Sally Tan, Elizabeth Buzney, Arash Mostaghimi
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Brigette Lee, Dirk Elston
Naltrexone in standard and reduced doses is efficacious in many inflammatory and acantholytic disorders.
We summarized current data of naltrexone relevant to dermatological practice.
An English language PubMed literature search was performed using the terms naltrexone, low-dose naltrexone, Hailey-Hailey, psoriasis, lichen planopilaris, alopecia, opioid, opioid receptor, treatment, dermatology, monitoring, side effect, skin, pruritus, cutaneous, acantholytic, and Darier.
Opioid receptors are found throughout the skin and affect cell proliferation, migration and adhesion. Mu opioid receptors have been found in all layers of the epidermis while delta receptors are concentrated at cell junctions and can reduce desmoglein expression. Typical doses of naltrexone result in continuous binding to receptors. Low doses result in intermittent blockade with increased ligand and receptor expression, potentiating their effect.
Our review was restricted to the English language literature.
Naltrexone affects inflammation, cell adhesion, and keratinocyte proliferation and migration. While low-dose naltrexone has demonstrated efficacy in treating Hailey-Hailey disease, further dose-ranging studies are needed. Data suggest naltrexone could be helpful in the treatment of pruritus and a variety of inflammatory and acantholytic skin diseases refractory to other treatments. At higher doses, liver function tests should be monitored on a periodic basis.
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Ali Rajabi-Estarabadi, Natalie M. Williams, Antonella Tosti
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): J. Company-Quiroga, S. Alique-García, Martínez-Morán, S. Córdoba, J. Borbujo
Publication date: Available online 21 December 2018
Source: Journal of the American Academy of Dermatology
Author(s): Rebecca Gaffney, Victoria P. Werth
Publication date: Available online 21 December 2018
Source: Cortex
Author(s): Dennis Dimond, Rebecca Perry, Giuseppe Iaria, Signe Bray
Visual short-term memory (VSTM) is an important cognitive capacity that varies across the healthy adult population and is affected in several neurodevelopmental disorders. It has been suggested that neuroanatomy places limits on this capacity through a map architecture that creates competition for cortical space. This suggestion has been supported by the finding that primary visual (V1) gray matter volume (GMV) is positively associated with VSTM capacity. However, evidence from neurodevelopmental disorders suggests that the dorsal visual stream more broadly is vulnerable and atypical volumes of other map-containing regions may therefore play a role. For example, Turner syndrome is associated with concomitantly reduced volume of the right intraparietal sulcus (IPS) and deficits in VSTM. As posterior IPS regions (IPS0-2) contains topographic maps, together this suggests that posterior IPS volumes may also associate with VSTM. In this study, we assessed VSTM using two tasks, as well as a composite score, and used voxel-based morphometry of T1-weighted magnetic resonance images to assess GMV in V1 and right IPS0-2 in 32 healthy young adults (16 female). For comparison with previous work, we also assessed associations between VSTM and voxel-wise GMV on a whole-brain basis. We found that total brain volume (TBV) significantly correlated with VSTM, and that correlations between VSTM and regional GMV were substantially reduced in strength when controlling for TBV. In our whole-brain analysis, we found that VSTM was associated with GMV of clusters centered around the right putamen and left Rolandic operculum, though only when TBV was not controlled for. Our results suggest that VSTM ability is unlikely to be accounted for by the volume of an individual cortical region, and may instead rely on distributed structural properties.
Publication date: Available online 21 December 2018
Source: Cortex
Author(s): Tilde Van Hirtum, Pol Ghesquière, Jan Wouters
In recent studies phonological deficits in dyslexia are related to a deficit in the synchronization of neural oscillations to the dynamics of the speech envelope. The temporal features of both amplitude modulations and rise times characterize the speech envelope. Previous studies uncovered the inefficiency of the dyslexic brain to follow different amplitude modulations in speech. However, it remains to be investigated how the envelope's rise time mediates this neural processing. In this study we examined neural synchronization in students with and without dyslexia using auditory steady-state responses at theta, alpha, beta and low-gamma range oscillations (i.e. 4, 10, 20 and 40 Hz) to stimuli with different envelope rise times. Our results revealed reduced neural synchronization in the alpha, beta and low-gamma frequency ranges in dyslexia. Moreover, atypical neural synchronization was modulated by rise time for alpha and beta oscillations, showing that deficits found at 10 and 20 Hz were only evident when the envelope's rise time was significantly shortened. This impaired tracking of rise time cues may very well lead to the speech and phonological processing difficulties observed in dyslexia.
Publication date: Available online 21 December 2018
Source: Cortex
Author(s): Sean James Fallon, Kinan Muhammed, Daniel S. Drew, Yuen-Siang Ang, Sanjay G. Manohar, Masud Husain
Several lines of evidence suggest that dopamine modulates working memory (the ability to faithfully maintain and efficiently manipulate information over time) but its specific role has not been fully defined. Nor is it clear whether any effects of dopamine are specific to memory processes or whether they reflect more general cognitive mechanisms that extend beyond the working memory domain. Here, we examine the effect of haloperidol, principally a dopamine D2 receptor antagonist, on the ability of humans to ignore distracting information or update working memory contents. We compare these effects to performance on an independent measure of cognitive control (response conflict) which has minimal memory requirements. Haloperidol did not selectively affect the ability to ignore or update, but instead reduced the overall quality of recall. In addition, it impaired the ability to overcome response conflict. The deleterious effect of haloperidol on response conflict was selectively associated with the negative effect of the drug on ignoring – but not updating – suggesting that dopamine affects protection of working memory contents and inhibition in response conflict through a common mechanism. These findings provide new insights into the role of dopamine D2 receptors on human cognition. They suggest that D2 receptor effects on protecting the memory contents from distraction might be related to a more general process that supports inhibitory control in contexts that do not require working memory.
Publication date: Available online 21 December 2018
Source: Cortex
Author(s): Hadas Okon-Singer, Avishai Henik, Shai Gabay
Based on findings showing that attention is captured by aversive stimuli, previous studies have hypothesized that inhibition of return (IOR) is reduced at spatial locations previously occupied by threat cues. Yet evidence for this view is limited: Only a few studies have demonstrated a reduced degree of IOR following threat cues, while most have not found differences in IOR between aversive and neutral cues. In contrast to previous studies that used the spatial cuing paradigm and for the most part employed mild negative stimuli as cues, we examined the influence of highly aversive, colored and complex pictures of real life situations. As opposed to the stimuli used in previous studies, these pictures are thought to result in enhanced processing as well as in specific enhancement for threat pictures in comparison to neutral ones. Based on evidence indicating that enhanced processing of spatial cues results in increased IOR, we hypothesized that the negative picture cues employed in the present study would yield increased IOR. This hypothesis was confirmed in two experiments. We suggest that the enhancement of IOR following highly threatening cues may be related to efficient spatial orienting of attention in response to stimuli that are important from an evolutionary point of view. The results are discussed in the context of neurocognitive mechanisms that may underlie the modulation of IOR by emotional information.
Publication date: Available online 22 December 2018
Source: Journal of Dermatological Science
Author(s): Sooah Kim, Byung Woo Kim, Vicky P. Prizmic, Eugene Oh, Victoria Yu, Dongwon Kim, Luis A. Garza
Publication date: Available online 22 December 2018
Source: Magnetic Resonance Imaging
Author(s): Dan Benjamini, Peter J. Basser
Diffusion magnetic resonance imaging (dMRI) of biological systems most often results in non-monoexponential signal, due to their complexity and heterogeneity. One approach to interpreting dMRI data without imposing tissue microstructural models is to fit the signal to a multiexponential function, which is sometimes referred to as an inverse Laplace transformation, and to display the coefficients as a distribution of the diffusivities, or water mobility spectra. Until recently, this method has not been used in a voxelwise manner, mainly because of heavy data requirements. With recent advancements in processing and experimental design, voxelwise Laplace MRI approaches are becoming feasible and attractive. The rich spectral information, combined with a three-dimensional image, presents a challenge because it tremendously increases the dimensionality of the data and requires a robust method for interpretation and analysis. In this work, we suggest parameterizing the empirically measured water mobility spectra using a bimodal lognormal function. This approach allows for a compact representation of the spectrum, and it also resolves overlapping spectral peaks, which allows for a robust extraction of their signal fraction. We apply the method on a fixed spinal cord sample and use it to generate robust intensity images of slow- and fast-diffusion components. Using the parametric variables, we create novel image contrasts, among them the information entropy of the water mobility spectrum, which pack unique features of the individual diffusion regimes in the investigated system.
Research findings on the relationship between serum androgens and adipose tissue in older females are inconsistent. We aimed to clarify the relationship using state‐of‐the art techniques to evaluate associations between body fat distribution and plasma testosterone (T) levels in older postmenopausal women.
Observational, cross‐sectional study of healthy, community dwelling postmenopausal women.
Postmenopausal women, (60‐80 years old) were included in this study. Overall body composition was evaluated by dual‐energy x‐ray absorptiometry. Abdominal and thigh fat depots were measured by magnetic resonance imaging. Circulating T concentrations by liquid chromatography‐tandem mass spectrometry.
Thirty‐five women (66.6 ± 0.8 years) participated in this study. T levels were positively associated with clinical proxy measure of adiposity including weight (ρ=0.39), BMI (ρ=0.43) and waist circumference (ρ=0.39) (all p<0.05). Fat mass and percent body fat were correlated with T levels (ρ=0.42 and 0.38 respectively, both p<0.05). T correlated with overall and superficial abdominal fat (ρ=0.34 and 0.37 respectively, both p<0.05) but not with visceral adipose tissue. T increased with greater thigh fat (ρ=0.49, p<0.05) in both superficial and deep depots (ρ=0.50 and 0.35 respectively, both p<0.05).
Our results suggest that postmenopausal women with higher circulating T levels have both higher regional and overall body adiposity. These findings underscore the sexual dimorphism in the relationship between serum androgen levels and adiposity.
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The aldosterone/ renin ratio is the initial screening test for primary hyperaldosteronism (PHA), but little data exists regarding ethnic variations in this.
Following clinical observation of a high prevalence of abnormal ARR in patients of African origin, we retrospectively reviewed all ARR measurements in a single centre over 10 years. Rates of hypokalaemia, intraventricular septal thickness (IVS, by echocardiography) and adrenal imaging were recorded when available.
ARR was available in 1473 patients, and abnormal in 374 (25.4%). Abnormal ARR was observed in 305/ 1349 (22.6%) of European‐origin and 69/ 124 (55.6%) of African‐origin patients (p<0.001). Among those with abnormal ARR, hypokalaemia (<3.5 mmol/l) was documented on at least one occasion in 171/ 305 (56.1%) European‐origin and 43/ 69 (62.3%) African‐origin patients (p=0.35). Median (range) IVS was 1.57 (0.78 ‐ 2.80) cm in African‐origin and 1.20 (0.69 ‐ 2.18) cm in European‐origin patients (p<0.002); IVS did not correlate with aldosterone or ARR however. Adrenal adenoma was identified in 41/170 (24.1%) of European‐origin and 4/29 (13.7%) African‐origin patients (p=0.15), while hyperplasia was identified in 35/170 (20.5%) of European and 8/29 (27.5%) African patients (p=0.39).
In summary, ARR was abnormal in 55.6% of African‐origin patients screened at an Irish hospital. Rates of hypokalaemia were similar between European‐origin and African‐origin patients. These findings have implications for the use of current screening guidelines for ARR in African‐origin patients and also for the mechanistic role of aldosterone in hypertensive complications in African‐origin patients.
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: Clinico-pathological correlation
Mohit Dogra, Ramandeep Singh, Mangat R Dogra
Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh, India
Correspondence Address:
Dr. Mohit Dogra
Advanced Eye Centre, Post Graduate Institute of Medical Education and Research, Chandigarh - 160 012
India
DOI: 10.4103/ijo.IJO_881_18
Figure 1: (a) showing pale disc edema (blue arrows) with an inferotemporal branch retinal artery occlusion, (b and c) showing "wedge shaped" equatorial choroidal infarcts on fluorescein angiogram, and (d) right side temporal artery biopsy at 200× magnification showing intimal proliferation with breaks in the internal elastic lamina (yellow arrows) with extravasation of red blood cells in the tunica media (black arrow) with minimal inflammatory cells, suggestive of vasculitis Click here to view |
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Indian Journal of Ophthalmology – On the right path Santosh G Honavar Indian Journal of Ophthalmology 2019 67(1):1-2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Artificial intelligence (AI) in healthcare and biomedical research: Why a strong computational/AI bioethics framework is required? Jatinder Bali, Rohit Garg, Renu T Bali Indian Journal of Ophthalmology 2019 67(1):3-6 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Hypopigmented fundus in a young male Nawazish Fatma Shaikh, Vinod Kumar Indian Journal of Ophthalmology 2019 67(1):7-7 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Current concepts in crosslinking thin corneas Rashmi Deshmukh, Farhad Hafezi, George D Kymionis, Sabine Kling, Rupal Shah, Prema Padmanabhan, Mahipal S Sachdev Indian Journal of Ophthalmology 2019 67(1):8-15 Corneal cross-linking (CXL), introduced by Wollensak et al. in 2003, is a minimally invasive procedure to halt the progression of keratoconus. Conventional CXL is recommended in eyes with corneal thickness of at least 400 microns after de-epithelialization to prevent endothelial toxicity. However, most of the keratoconic corneas requiring CXL may not fulfill this preoperative inclusion criterion. Moderate-to-advanced cases are often found to have a pachymetry less than this threshold. There are various modifications to the conventional method to circumvent this issue of CXL thin corneas while avoiding the possible complications. This review is an update on the modifications of conventional CXL for thin corneas. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Management of Duane retraction syndrome: A simplified approach Nripen Gaur, Pradeep Sharma Indian Journal of Ophthalmology 2019 67(1):16-22 Duane retraction (or co-contraction) syndrome is a congenital restrictive strabismus which can occur either as an isolated entity or in conjunction with other congenital anomalies and is now listed as a congenital cranial dysinnervation disorder. It is characterized by co-contraction of horizontal recti on attempted adduction causing globe retraction along with variable amounts of upshoots or downshoots. It may have limited abduction or adduction or both and present as esotropic, exotropic, or orthotropic Duane. The diagnosis of this disease is usually clinical. However, recent research has provided a greater insight into the genetic basis of this disease paving a way for a greater role of genetics in the diagnosis and management. This disease can have a varied presentation and hence the treatment plan should be tailor-made for every patient. The indications for surgery are abnormal head posture, deviations in the primary position, retraction and narrowing of palpebral aperture and up- or downshoots during adduction, and sometimes also to improve abduction. The arrival of newer surgical techniques of periosteal fixation (PF) of lateral rectus (LR), partial vertical rectus transposition, or superior or inferior rectus transposition in addition to LR recession with Y-split has vastly improved the management outcomes, providing not only primary position orthophoria but also increased binocular visual fields as well. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Visual electrodiagnostics and eye movement recording - World Society of Pediatric Ophthalmology and Strabismus (WSPOS) consensus statement Manca Tekavcic Pompe, Alki Liasis, Richard Hertle Indian Journal of Ophthalmology 2019 67(1):23-30 Visual electrodiagnostics and eye movement recording are important additional clinical tools in evaluation, diagnosing and management of ophthalmic and neurological disorders. Due to their objectiveness and non-invasiveness they can play an important role in pediatric ophthalmology. The WSPOS (World Society of Pediatric Ophthalmology and Strabismus) consensus statement gives insight into basic principles and highlights the clinical application of both visual electrodiagnostic tests and eye movement recording. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Commentary: "Current" consensus: Electrodiagnostics in eye Nripen Gaur, Pradeep Sharma Indian Journal of Ophthalmology 2019 67(1):30-31 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Limbal ischemia: Reliability of clinical assessment and implications in the management of ocular burns Ka Wai Kam, Chaitali N Patel, Neda Nikpoor, Marco Yu, Sayan Basu Indian Journal of Ophthalmology 2019 67(1):32-36 Purpose: Limbal ischemia is an important prognostic factor in the management of ocular burns. In this study, we evaluated the reliability of clinically assessing limbal ischemia among ophthalmic professionals. Methods: This study included 111 ophthalmic professionals who were shown 12 diffuse illumination color slit-lamp photographs of eyes with recent chemical injuries. Respondents were asked whether the photos were assessable and if yes, then to indicate the presence, location, and grade of limbal ischemia in each case. The responses were collected using a standard data collection sheet and the inter-observer agreement was calculated. Results: All participants responded to every question. Of the 1,332 responses, images were deemed assessable in 1,222 (91.7%) instances. The overall agreement (Fleiss' kappa) for the presence of limbal ischemia and severity of limbal ischemia was 0.106 and 0.139, respectively (P < 0.012). Among the four groups of observers, practicing cornea specialists displayed significantly (P < 0.003) higher kappa values (0.201–0.203) when compared to residents (0.131–0.185), fellows (0.086–0.127), and optometrists (0.077–0.102). All indicated a poor level of inter-rater consistency. Conclusion: The results indicate that clinical assessment of limbal ischemia is highly subjective and there is lack of reliability even among cornea specialists who regularly manage patients with ocular burns. A non-invasive, standardized, objective, accurate, and reliable modality for ocular surface angiography is desperately needed for proper assessment and prognostication of ocular burns. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Commentary: Assessment of limbal ischemia in ocular burns Naveen Radhakrishnan, N Venkatesh Prajna Indian Journal of Ophthalmology 2019 67(1):37-37 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Dopamine levels in human tear fluid Niyati Seshagiri Sharma, Suraj Kumar Acharya, Archana Padmanabhan Nair, Jyoti Matalia, Rohit Shetty, Arkasubhra Ghosh, Swaminathan Sethu Indian Journal of Ophthalmology 2019 67(1):38-41 Purpose: To determine the levels of dopamine in tear fluid and demonstrate the use of tear fluid as a non-invasive source for dopamine measurements in humans. Methods: The study cohort included 30 clinically healthy individuals without any pre-existing ocular or systemic conditions. Matched tear fluid (using Schirmer's strips and capillary tubes) and plasma were collected from the subjects. Dopamine levels were evaluated using direct competitive chemiluminescent enzyme-linked immunosorbent assay (ELISA), dopamine kit (Cloud Clone Corp, TX, USA). Results: Significantly higher dopamine levels were found in the tear fluid compared to plasma in the study subjects. The level of dopamine was 97.2 ± 11.80 pg/ml (mean ± SEM), 279 ± 14.8 pg/ml (mean ± SEM), and 470.4 ± 37.64 pg/ml (mean ± SEM) in the plasma and in the tears collected using Schirmer's strips and capillary tubes, respectively. Conclusion: Dopamine was detectable in all the tear fluid samples tested and was also found to be at a higher concentration than in plasma samples. Tear fluid can be used as a non-invasive sample source to monitor dopamine levels.
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