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Case Reports
. 2021 Dec 1;41(4):e764-e766.
doi: 10.1097/WNO.0000000000001221.

Tonic Pupil Following COVID-19

Madhumita Gopal  1 , Selvakumar Ambika, Krishnakumar Padmalakshmi
Affiliations
Case Reports

Tonic Pupil Following COVID-19

Madhumita Gopal et al. J Neuroophthalmol. .

Abstract

A 37-year-old patient presented to our emergency department with sudden onset decreased vision with a history of being treated for COVID 19 3 weeks earlier. On examination, she was found to have a tonic right pupil, which was confirmed with a dilute pilocarpine test. As tonic pupils are known to be caused by neurotropic viruses and our current understanding of the SARS-CoV-2 is that it does affect the nervous system, we feel that the tonic pupil in our patient may be secondary to COVID 19.

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Conflict of interest statement

The authors report no conflicts of interest.

Figures

FIG. 1.
FIG. 1.
Slit-lamp photo of both pupils showing anisocoria in ambient (A) and bright (B) light and after instillation of 0.1% pilocarpine (C).
FIG. 2.
FIG. 2.
Slit-lamp photo showing details of iris. There is absent and decreased contraction of the iris sphincter from 10 to 1 o clock with bunching up of the adjacent normal segments.
See this image and copyright information in PMC

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