Table 2.

Baseline characteristics of the studies.

Study	Gender	Age	Optic neuritis affected eye	Visual acuity (right eye)	Visual acuity (left eye)
Zhou 2020 et al. [8]	Male	26	Left eye	Hand motion	20/250
Sawalha 2020 et al. [9]	Male	44	Both eyes	20/200	20/30
Benito-Pascual 2020 et al. [10]	Female	50	Left eye	6/6	20/200
Finsterer 2021 et al. [11]	Male	48	Left eye	N/A	N/A
François 2021 et al. [12]	Female	38	Right eye	Blindness (non-COVID-19 related)	Hand motion