[PHOTOKERATITIS AS RESULT OF DOMESTIC EXPOSURE TO ULTRAVIOLET-C (UVC) LIGHT].

INTRODUCTION: During the global outbreak of coronavirus disease 2019 pandemic, people sought ways to disinfect their domestic and public surroundings. One of the sanitation options included the usage of ultraviolet-C (UVC) lamps since UVC radiation has been shown to effectively inactivate the SARS-Coronavirus. UVC radiation may also be effective against the SARS-CoV-2 virus. Here we report four cases of bilateral photokeratitis due to the improper usage of UV lamps during the first outbreak of COVID-19 in Israel. METHODS: We collected 4 case reports from patients who were diagnosed with bilateral photokeratitis due to improper usage of UV lamps in their domestic environment from May to December 2020 during the first outbreak of COVID-19 in Israel. RESULTS: A total of four patients presented with signs and symptoms of bilateral photokeratitis after exposure to UV lamps. DISCUSSION: Acute exposure of UVC to the cornea may cause "burns", known as photokeratitis. The signs of photokeratitis usually appear a few hours after the exposure. Precautious steps to educate the population must include using protective eyewear in any exposure to UV light and avoiding the use of germicidal lamps in public locations with exposure to the population.

[OCULAR SARCOIDOSIS].

INTRODUCTION: A 68-year-old healthy female, with no past systemic or ocular history, presented with decreased vision in both eyes. On initial examination, there were extensive vitreal opacities in both eyes. On the following visit, bilateral panuveitis was newly observed, without otherwise systemic clinical manifestations. The patient responded well to treatment with systemic and topical steroids. Initial workup excluded tuberculosis and syphilis. Angiotensin-converting enzyme (ACE) was within normal range. In order to make a definitive diagnosis and to exclude lymphoma, we decided to perform a vitreous biopsy after 2-weeks of steroids withdrawal. After cessation of steroids, new lesions appeared beneath the right eye and over the nasal bridge. Moreover, iris nodules over the stroma, pupil's margin and anterior chamber angle were noticed in both eyes. Biopsy from a skin lesion demonstrated non-caseating granulomas, supporting diagnosis of sarcoidosis. A chest computed tomography (CT) scan demonstrated compatible radiologic findings of bilateral hilar and mediastinal lymphadenopathy. Sarcoidosis is a chronic multisystem, autoimmune, granulomatous disease. Ocular involvement is common among patients with sarcoidosis, with the most common ocular manifestation being uveitis. We report a case that presented with bilateral panuveitis due to sarcoidosis with no systemic manifestations or elevated serum biomarkers. Definitive diagnosis was verified in histopathological findings from a skin biopsy and radiological findings in chest CT.