Peculiar Visual Symptoms Following COVID-19 Illness: COVID-19 and Visual Snow.

Background: To report occurrence of peculiar visual symptoms of visual snow syndrome in patients following COVID-19 disease. Methods: We report five patients who suffered from a mild form of COVID-19 disease who after recovery presented with peculiar visual symptoms. These patients underwent detaile...

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Bibliographic Details
Published in:Optometry & Visual Performance Vol. 13; no. 2; pp. 125 - 129
Main Authors: Kashyap, Himanshu, Ratra, Aashna, Sundaramoorthy, SathishKumar, Ratra, Vineet, Ratra, Dhanashree
Format: case study pictorial Journal Article
Published: Optometric Extension Program Jun2025
Online Access:View this record in EBSCOhost
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Summary:Background: To report occurrence of peculiar visual symptoms of visual snow syndrome in patients following COVID-19 disease. Methods: We report five patients who suffered from a mild form of COVID-19 disease who after recovery presented with peculiar visual symptoms. These patients underwent detailed history-taking, with complete ophthalmic and neurologic checkup and investigation. Results: Five patients with age ranging from 10-54 years were seen 4-24 months after a self-reported mild attack of COVID-19 disease. The diagnosis was confirmed on RT-PCR test for SARS-CoV-2 virus. The peculiar symptoms reported were seeing constant static-like visual snow, palinopsia, light sensitivity, and dizziness in bright light. The visual acuity was 20/20. One patient was known to have sectoral retinitis pigmentosa, and another had undergone scleral buckle surgery for retinal detachment many years ago. The ocular examination was normal in the other 3 patients. None had any neurologic abnormality and only one had a history of migraine. Patients were educated about the benign nature of these symptoms and were counseled. Conclusions: COVID-19 disease can possibly act as a precipitating cause for visual snow syndrome. Awareness of this syndrome can help the ophthalmic healthcare professional counsel these bewildered patients.