Seroreversion in HIV-Associated Bilateral CMV Retinitis: A Challenging Case Report.

PURPOSE: To report a case of seroreversion in a patient with HIV-associated bilateral CMV retinitis and the challenges associated with detection of this phenomenon in late stages of HIV. METHOD: Retrospective single case report. RESULTS: The clinical picture of the patient on presentation was suggestive of viral retinitis. PCR confirmed a diagnosis of CMV retinitis. Serology for HIV-1 & 2 was negative. A viral load of HIV and CD-4 count confirmed his sero status to be positive for HIV. Improvement in visual acuity and slow resolution of the lesion was noted with both anti-viral for CMV and HIV. A repeat HIV-1 testing was positive with an improvement in CD4 count. CONCLUSION: In highly suspicious individual, with a negative serology (post screening test) for HIV, the disease status should be confirmed by testing the individual for HIV viral load and CD4 count.

Refractory acute retinal necrosis presenting as peripapillary choroiditis - A diagnostic and therapeutic challenge.

ABSTRACT: This report describes a challenging case of refractory acute retinal necrosis (ARN) with peripapillary choroiditis as the initial presenting sign. Imaging studies confirmed multifocal choroidal lesions and noted the novel sign of vertical hyper-reflective strips (VHRS) in the outer nuclear layer. Initial treatment with acyclovir and valacyclovir failed, and involvement of the other eye suggested a resistant variant of varicella zoster virus. High-dose oral famciclovir therapy resulted in rapid resolution of ARN in both eyes. This case highlights the rare occurrence of choroiditis, the novel finding of VHRS, and the potential utility of high-dose oral famciclovir in treating refractory ARN.

Vision Crisis-Bilateral Outer Retinitis Due to Mumps Virus.

PURPOSE: To report a case of mumps-associated outer retinitis, diagnostic, and therapeutic challenges associated with the disease. METHOD: Retrospective observational case report. RESULTS: An 8-year-old male child on presentation had a history of mumps infection following which he developed outer retinitis. Upon evaluation, he had bilateral multifocal perivascular cerebriform retinitis. MRI revealed increased uptake of contrast by bilateral parotid gland and with serum mumps IgM and IgG antibodies being raised, a diagnosis of mumps associated outer retinitis was made. In terms of treatment post-systemic steroid therapy, hyperbaric oxygen therapy was tried as a rescue therapy in this patient. Improvement in vision was noted in the left eye more than the right eye. CONCLUSION: Hyperbaric oxygen therapy can be considered as an additional therapy to systemic steroid therapy in mumps associated retinitis. In such a situation, since there is no specific antiviral drug available for mumps infection, the most effective treatment is prevention by vaccination.

Unilateral Toxoplasma retinochoroiditis with frosted branch angiitis: a multimodal imaging study.

A woman in her late 30s presented with sudden diminution of vision, redness and pain in the right eye (OD) of 10 days' duration. Best corrected visual acuity (BCVA) was 20/160 in OD and 20/20 in the left eye (OS). Anterior segment of OD showed keratic precipitates, flare 3+, cells 2+ and a festooned pupil. Vitreous haze and cells were seen in OD. Frosted branch angiitis (FBA) was seen in all quadrants in OD and old Toxoplasma scar was seen in both eyes. Serum toxoplasma immunoglobulin G (IgG) was positive and IgM negative, and PCR of an aqueous humour sample was negative for Toxoplasma She was diagnosed with toxoplasa retinochoroiditis in OD and treated with intravitreal clindamycin injections, oral anti-Toxoplasma antibiotics and steroids. Three months later, her BCVA in OD was 20/40 with resolving inflammation. She presented 2 months later with a new focus of retinochoroiditis without FBA and an old Toxoplasma scar.

Choroidal and central macular thickness before and after treatment in post fever retinitis.

PURPOSE: To study the choroidal thickness (CT) and central macular thickness (CMT) in post-fever retinitis (PFR) and their correlation with visual acuity and treatment. METHODS: A retrospective, observational study of patients presenting with PFR from 2013 to 2021 and with spectral domain optical coherence tomography (SD-OCT) (Heidelberg®, SpectralisTM, Heidelberg, Germany) images were included. The CT and CMT were measured at presentation and at the final visit. The CT was measured subfoveally and at points 2000 µm superior, inferior, medial, and lateral from the fovea using the caliper tool. RESULTS: Seventy-nine eyes of 65 patients were included for this study. The mean age was 39.03 (±16.00) years with female preponderance of 53.84% (n = 35). Mean follow-up duration was 30 days. Mean CT at presentation and at follow-up was 254.12 µm and 241.51 µm, respectively. CT was decreased in majority of the eyes 67.1% (n = 53) from their baseline value. Mean CMTs at presentation and final visit were 454.8 µm and 223.7 µm, respectively. Best corrected visual acuity had a positive correlation with CMT (r = 0.340; P = 0.002) and negligible correlation with CT. A significant decrease in the mean CT was noted in patients who received doxycycline either alone or in combination with a steroid as compared to those who did not receive any treatment (P < 0.001). The significance of which is unknown presently. CONCLUSION: CMT has a greater role in determining the final visual outcome than CT. CT can be reduced post-treatment with no effect on vision.

Quantitative and comparative analysis of thermography parameters in posterior scleritis, choroiditis, and controls.

PURPOSE: To compare various ocular thermography parameters in posterior scleritis (PS), choroiditis (choroidal granuloma [CG], Vogt-Koyanagi-Harada [VKH] syndrome), central serous chorioretinopathy (CSCR), and healthy controls. METHODS: This retrospective, observational, comparative study evaluated cases undergoing ocular thermography between April 2017 and October 2023. The study groups included cases of PS, CG, and VKH, while the control group comprised CSCR cases and healthy individuals. Various thermography parameters were assessed, which were as follows: Ocular surface temperature (OST), central corneal temperature (CCT), average scleral temperature (ST), nasal scleral temperature (nST), temperature difference between both the eyes (∆t), and difference between scleral and corneal temperatures (ST - CCT, nST - CCT). RESULTS: It was found that ∆t was significantly higher in the PS group compared to the CG ( P = 0.005), CSCR ( P = 0.0001), and control groups (dilated control: P =0.006, undilated control: P = 0.0001). ST - CCT and nST - CCT were significantly higher in the undilated control and CSCR groups and significantly lower in the PS group. ST - CCT and nST - CCT showed less difference in the affected eyes compared to contralateral healthy eyes of PS and CG cases. OST, CCT, ST, and nST displayed statistically insignificant differences across all groups. CONCLUSION: It is advisable to focus on temperature differences between the affected and healthy eyes, or the difference between the central corneal and scleral temperature of the affected eye, utilizing parameters such as ∆t, ST - CCT, and nST - CCT. These composite parameters offer a more effective approach than individual measurements like OST, CCT, ST, and nST. Thermography can serve as a screening tool to suspect and differentiate PS.

Evolving Fuchs' uveitis - A diagnostic challenge.

PURPOSE: To study cases of Fuchs' uveitis (FU) diagnosed as uveitis other than FU at initial visits. METHODS: A retrospective, observational chart review. Details of clinical presentation, initial diagnosis, treatment details, and follow-up before and after the diagnosis of FU was studied. RESULT: Twenty eyes of 19 patients finally diagnosed with FU. Mean total follow-up was 39 months (range: 3-120 months, median: 30 months) and follow-up after diagnosis of FU was 18 months (range: 0-84 months, median: 11 months). Most of the cases were diagnosed with anterior plus intermediate uveitis at the presentation (n = 8, 42.1%) and received steroid treatment. Keratic precipitates (KPs) typical of FU developed after mean 5.4 months of presentation (range: 1-18 months, median: 2 months). Altered iris pattern was noted after 17 months of presentation (range: 2-70 months, median: 8.5). Vitritis of grades 1-2 was present in all eyes. Overlap of uveitis of other etiology (retinal vasculitis, presumed tubercular intermediate uveitis) was found in three patients. Systemic immune disease (systemic lupus erythematosus, pulmonary sarcoidosis) was present in two patients. No treatment for the ocular inflammation was given after the diagnosis of FU in any patient and no change in the pattern of FU was observed during further follow-up. CONCLUSION: Evolving FU may lead to misdiagnosis and mismanagement. We suggest a conservative approach, withholding steroid treatment, allowing FU to evolve, in otherwise asymptomatic patients with white eye, mild to moderate anterior chamber (AC) and vitreous inflammation, absent posterior synechiae and normal fundus examination or fundus examination suggestive of resolved uveitis.

A COVID-19 perspective of multiple evanescent white dot syndrome (MEWDS).

Multiple evanescent white dot syndrome (MEWDS) is a rare form of posterior uveitis characterized by involvement in the posterior pole and mid-periphery. A viral etiology that provokes an immune-mediated response has been hypothesized to be the inciting factor of the pathology. Recently, there has been an increase in the literature regarding new-onset uveitis and reactivation of previously diagnosed cases of uveitis following COVID-19 vaccinations. The COVID-19 vaccination has been speculated to trigger an immunomodulatory shift in recipients, resulting in an autoimmune event. MEWDS following COVID-19 vaccination was reported in 31 patients. It was most commonly observed following the first dose, affecting 15 patients, and least commonly after the booster dose, in only one patient. MEWDS-like disease following anti-SARS-CoV-2 vaccinations was reported the most in 16 cases after the Pfizer-BioNTech vaccination (BNT162b2 mRNA). Most of these cases had Primary MEWDS without any previous history of a similar event in the past.

Antiviral treatment for acute retinal necrosis: A systematic review and meta-analysis.

Acute retinal necrosis is a progressive intraocular inflammatory syndrome characterized by diffuse necrotizing retinitis that can lead to a poor visual outcome, mainly from retinal detachment. The antiviral treatment approach for acute retinal necrosis varies as there are no established guidelines. We summarize the outcomes of acute retinal necrosis with available antiviral treatments. Electronic searches were conducted in PubMed/MEDLINE, EMBASE, Scopus, and Google Scholar for interventional and observational studies. Meta-analysis was performed to evaluate the pooled proportion of the predefined selected outcomes. This study was registered in PROSPERO (CRD42022320987). Thirty-four studies with a total of 963 participants and 1,090 eyes were included in the final analysis. The estimated varicella-zoster virus and herpes simplex virus polymerase chain reaction-positive cases were 63% (95% CI: 55-71%) and 35% (95% CI: 28-42%), respectively. The 3 main antiviral treatment approaches identified were oral antivirals alone, intravenous antivirals alone, and a combination of systemic (oral or intravenous) and intravitreal antivirals. The overall pooled estimated proportions of visual acuity improvement, recurrence, and retinal detachment were 37% (95% CI: 27-47%), 14% (95% CI: 8-21%), and 43% (95% CI: 38-50%), respectively. Patients treated with systemic and intravitreal antivirals showed a trend towards better visual outcomes than those treated with systemic antivirals (oral or intravenous) alone, even though this analysis was not statistically significant (test for subgroup differences P = 0.83).