UVEITIS AFTER THE BNT162b2 mRNA VACCINATION AGAINST SARS-CoV-2 INFECTION: A Possible Association.

PURPOSE: To describe uveitis cases after the BNT162b2 mRNA SARS-CoV-2 vaccination. METHODS: This is a multicenter, retrospective study. Vaccine-related uveitis diagnosis was supported by the classification of the World Health Organization Adverse Drug Terminology and the Naranjo criteria. RESULTS: Twenty-one patients (23 eyes) with a mean age of 51.3 years (23-78 years) were included. Eight of the 21 patients had a known history of uveitis. The median time from previous to current attack was 1 year (0.5-15 years). There were 21 anterior uveitis cases, two with bilateral inflammation. Eight cases occurred after the first vaccination and 13 after the second vaccination. All but three presented as mild to moderate disease. Two patients developed multiple evanescent white dot syndrome after the second vaccination. The mean time from vaccination to uveitis onset was 7.5 ± 7.3 days (1-30 days). At final follow-up, complete resolution was achieved in all but two eyes, which showed significant improvement. One case of severe anterior uveitis developed vitritis and macular edema after the second vaccination, which completely resolved after an intravitreal dexamethasone injection. CONCLUSION: Uveitis may develop after the administration of the BNT162b2 mRNA vaccine. The most common complication was mild to moderate anterior uveitis, while multiple evanescent white dot syndrome can also occur less frequently.

Magnetic resonance imaging of luxury perfusion of the optic nerve head in anterior ischemic optic neuropathy.

A 49-year-old woman with painless reduction in visual acuity in her left eye was found to have nonarteritic anterior ischemic optic neuropathy (NAION). Fluorescein angiography revealed optic disc capillary leakage consistent with "luxury perfusion." Contrast-enhanced FLAIR magnetic resonance imaging (MRI) showed marked enhancement of the left optic disc. Resolution of the optic disc edema and the MRI abnormalities followed a similar time course. This report appears unique in documenting the MRI findings of luxury perfusion in NAION.

Prevention of Staphylococcus epidermidis Endophthalmitis by Different Moxifloxacin Prophylaxis Routes.

BACKGROUND: To investigate postoperative endophthalmitis (POE) prevention by moxifloxacin prophylaxis. METHODS: After crystalline lens removal and intraocular lens (IOL) implantation, 18 rabbit eyes were injected intracameral with different coagulase negative staphylococci (CNS) inoculums in order to determine the minimum inoculum required for a reproducible POE model. Another 28 similar eyes were divided into Group A, which was implanted with standard IOLs with intracameral injection of 100 µg/0.1 ml moxifloxacin, Group B implanted with moxifloxacin presoaked IOLs, Group C treated as Groups A and B, and Group D (control) implanted with standard IOLs only. At the end of surgery, all eyes were injected with the minimal inoculum that had developed POE, and treated with topical moxifloxacin for 24 hours. They were then evaluated using 3 different POE scores. RESULTS: The minimum CNS concentration that developed reproducible POE was 5x10(5) CFUs/0.1 ml. Scores: 1. Clinical endophthalmitis was judged in 5/7 (71%), 4/7 (57%), 2/7 (28%) and 7/7 (100%) of Groups A-D eyes, respectively, p=0.005 and 0.057 for Groups B and C compared to D, respectively. 2. Endophthalmitis Scores for Groups A-D were 14.5±6.8, 10.6±4.5, 12.0±3.9 and 18.6±1.7, respectively, p=0.015, and ~0.07 for Groups B and C compared to D, respectively. 3. Hypoyon was noted in 2/6 (33%), 2/7 (28%), 2/7 and 6/7 (86%) of the Group A-D eyes, respectively, p=0.053, 0.03 and 0.03 for Groups A-C compared to D, respectively. CONCLUSION: POE can be best prevented by prophylactic moxifloxacin by presoaked IOLs treatment.