Choroid and retinal changes post COVID-19
Reviewed by Fiona Rowe

The authors aimed to evaluate choroid and inner neural layers in people previously recovered from Covid-19 compared to healthy controls using optical coherence tomography (OCT) over a six-month period. They recruited 96 people: 56 with Covid-19 at least three months previously (34 female, 22 male, mean age 44.89 ±20.9 years) and 40 controls with negative c-reactive protein and no history of Covid-19 infection (27 female, 13 male, mean age 53.57 ±14.3 years). There were no significant differences between groups for best corrected visual acuity, intraocular pressure and refractive error. On OCT, there was a significant decrease in the Covid-19 group for inner retinal ring, ganglion cell layer and peripapillary nerve fibre layer. Thickening was found in the sub-foveal choroid layer. No changes were seen for the macular structure. Results were consistent with a tendency to non-glaucomatous neuropathy.

Ocular repercussions in COVID-19 patients; structural changes of the retina and choroid.
Pocas IM, Lino P, Silva C, et al.
STRABISMUS
2023;31(4):271–80.