Evaluation of lymphocyte proliferation assay to purified protein derivative, enzyme linked immunosorbant assay, and tuberculin hypersensitivity in Eales′ disease

The purpose of this study was to evaluate the immunological responses against mycobacterial antigens in Eales′ disease. Fifty six patients with Eales′ disease and fifty age-and-sex-matched healthy volunteers with normal fundus findings taken as controls, were subjected to Mantoux test, using 2 TU/0.1 ml of purified protein derivative (PPD), lymphocyte proliferation assay to PPD, and ELISA to detect IgM and IgG antibodies against mycobacterial A-60 antigen. The results of Mantoux test and lymphocytes proliferation assay did not differ significantly in the two groups suggesting a similar cellular immune response. The number of individuals with recent exposure/reexposure to tuberculosis (IgM+) was significantly higher among patients. However the number of people with past exposure (IgM-IgG+) was significantly higher among controls. Our study indicates that there are no statistically significant differences in the humoral and cellular immune responses to mycobacterial antigens between the patients with Eales′ disease and controls, except for a significantly higher IgM positivity among the patients

Assessment of choroid thickness by swept‑source optical coherence tomography (SS-OCT) in patients with posterior uveitis

Background: This study aimed to measure the changes in choroid thickness using Swept-Source Optical Coherence Tomography (SS-OCT) after treatment of posterior uveitis along with changes in fundus auto-fluorescence pattern. Material and methods: This prospective observational cohort study was conducted from December 2018 to May 2020, in which 32 eyes of 20 patients presenting in the out-patient department with a clinical diagnosis of posterior uveitis were enrolled. Best-corrected visual acuity (BCVA) by Snellen chart, intraocular pressure (IOP) Measurement using a non-contact tonometer, choroidal thickness by SS-OCT, and fundus imaging by Fundus Autofluorescence was done. All tests were done at baseline, first follow-up of 2 ± 1 weeks and the second follow-up of 6 ± 2 weeks. Data was compiled and analyzed. Results: The mean age of patients was 31 ± 6.9 years with M:F of 3:1. During the second follow-up, with the healing of the lesions, there was a significant reduction in the choroidal thickness at all levels by SS-OCT (p < 0.05), with significant improvement in BCVA (0.05 vs. 0.14 vs. 0.31, p < 0.05). IOP increased significantly at the first follow-up to 17.31 from baseline (16.25) (p = 0.032). However, the rise at the second follow-up was not significant (17.03 vs. 16.25 at baseline, p = 0.15). On fundus autofluorescence, normal autofluorescence and hypofluorescence increased at the second follow-up of 6 weeks (p < 0.0001) Conclusion: SS-OCT showed a significant decrease in the choroidal thickness at all levels during the follow-ups. The healing of the posterior uveitis lesions and fundus autofluorescence became normal simultaneously

The Collaborative Ocular Tuberculosis Study (COTS)-1: A Multinational Descriptive Review of Tubercular Uveitis in Paediatric Population

Purpose To examine disease profile of tubercular uveitis (TBU) in Paediatric population. Methods Among 945 patients of the retrospective multinational study by the Collaborative Ocular Tuberculosis Study (COTS)-1, 29 Paediatric patients diagnosed with TBU were analyzed. Results Mean age of disease presentation was 12.8 (range 4-18 years), with predominance of males (n = 14/20; 70.0%) and Asian ethnicity (n = 25/29; 86.2%). Posterior uveitis (n = 14/28; 50%) was the most frequent uveitis phenotype, with choroidal involvement occurring in 64.7% (n = 11/17). Incidence of optic disc edema and macular edema was higher in children (n = 8/18; 44.4% and n = 5/18; 27.8%, respectively) than in adults (n = 160/942; 16.9% and n = 135/942; 14.3%, respectively). Comparison of optic disc edema between subgroups showed a significant difference (P =.006). All patients received oral corticosteroids, most of them with antitubercular therapy. Treatment failure developed in 4.8% (n = 1/21). Conclusions Children have a more severe inflammatory response to the disease, and an intensive anti-inflammatory therapeutic regimen is required to achieve a positive treatment outcome

The Collaborative Ocular Tuberculosis Study (COTS)-1: A Multinational Review of 165 Patients with Tubercular Anterior Uveitis

10.1080/09273948.2020.1761400Ocular Immunology and Inflammation28S117-2

The Collaborative Ocular Tuberculosis Study (COTS)-1: A Multinational Review of 447 Patients with Tubercular Intermediate Uveitis and Panuveitis

Purpose: Tubercular intermediate uveitis (TIU) and panuveitis (TBP) are difficult to manage because of limitations in diagnostic tools and lack of evidence-based treatment guidelines. The Collaborative Ocular Tuberculosis Study (COTS) analyzed treatment regimens and therapeutic outcomes in patients with TIU and TBP

Tubercular uveitis : nuggets from Collaborative Ocular Tuberculosis Study (COTS)-1

Background: Tuberculosis (TB) is a major infection that can affect the eye as first and sole presentation without features of systemic disease. Controversy exists regarding diagnosis and management of tubercular uveitis (TBU), further compounded by regional variations in disease expression. Purpose: Collaborative Ocular Tuberculosis Study (COTS)-1 aims to address knowledge deficits through collaboration amongst uveitis specialists across the globe by sharing the data of patients with TBU presented at participating centers from January 2004 to December 2014. Methods: Data collection was facilitated by a novel method of real-time encrypted web-based data entry allowing regular updates as new data and recommendations become available. Results: Information on clinical features, investigation findings, management, and treatment outcomes were reviewed to get an idea about real world scenario. Conclusion: The current review aims to focus on methodology and briefing of published reports from COTS group in COTS-1 study to highlight key messages from this large data

Tubercular Uveitis: Nuggets from Collaborative Ocular Tuberculosis Study (COTS)-1

Background: Tuberculosis (TB) is a major infection that can affect the eye as first and sole presentation without features of systemic disease. Controversy exists regarding diagnosis and management of tubercular uveitis (TBU), further compounded by regional variations in disease expression. Purpose: Collaborative Ocular Tuberculosis Study (COTS)-1 aims to address knowledge deficits through collaboration amongst uveitis specialists across the globe by sharing the data of patients with TBU presented at participating centers from January 2004 to December 2014. Methods: Data collection was facilitated by a novel method of real-time encrypted web-based data entry allowing regular updates as new data and recommendations become available. Results: Information on clinical features, investigation findings, management, and treatment outcomes were reviewed to get an idea about real world scenario. Conclusion: The current review aims to focus on methodology and briefing of published reports from COTS group in COTS-1 study to highlight key messages from this large data

Visual Morbidity in Ocular Tuberculosis - Collaborative Ocular Tuberculosis Study (COTS)-1: Report #6

Objective Aim of the study was to examine extent, natural history, and clinical features associated with visual impairment (VI) in patients diagnosed with ocular tuberculosis (OTB) by the Collaborative Ocular Tuberculosis Study (COTS)-1. Methods Multi-center retrospective cohort study. Main outcomes were VI. Results A total of 302 patients were included in the study, including 175 patients whose data related to BCVA were available throughout the 2 years of follow up. Mean BCVA grossly improved at 12, 18, and 24 months of follow-up (p< .001). Mean BCVA was worse at 12-18th month follow-up for patients treated with ATT versus patients who were not treated with ATT, but patients treated with ATT had a statistically significant improvement in BCVA at the 24-month endpoint. Conclusions OTB is associated with significant visual morbidity, future well-designed prospective studies are warranted to establish the causal association between OTB and visual loss

Twenty-four Month Outcomes in the Collaborative Ocular Tuberculosis Study (COTS)-1: Defining the "Cure" in Ocular Tuberculosis

Purpose To report the clinical findings, anatomical features, and treatment outcomes in subjects with ocular tuberculosis (OTB) at 24 months in the Collaborative Ocular Tuberculosis Study (COTS)-1. Methods Of the 945 subjects included in COTS-1, those who completed a 24-month follow-up after completion of treatment were included. The main outcome measure was a number of patients with treatment failure (TF). Results 228 subjects (120 males; mean age of 42.82 +/- 14.73 years) were included. Most common phenotype of uveitis was posterior (n= 81; 35.53%), and panuveitis (n= 76; 33.33%). Fifty-two patients (22.81%) had TF. On univariable analysis, odds of high TF was observed with bilaterality (OR: 3.46,p= .003), vitreous haze (OR: 2.14,p= .018), and use of immunosuppressive therapies (OR: 5.45,p= .003). However, only bilaterality was significant in the multiple regression model (OR: 2.84;p= .02). Conclusions Majority of subjects (>75%) achieved cure in the COTS-1 at 24-month follow-up. The concept of "cure" may be a valuable clinical endpoint in trials for OTB