Fig. 3

Ophthalmologic examination of the affected left eye, 3 months after treatment. A pale optic disk on fundus imaging (A) and a brightened disk on OCTA infrared imaging (B) both indicate simple optic atrophy. The OCTA B-scan reveals the significantly reduced thickness of the peripapillary retinal nerve fiber layer (C; distance between red and blue lines), with a mean value of 50 μm (D: G, total; NS, nasal superior; N, nasal; NI, nasal inferior; TS, temporal superior; T, temporal; TI, temporal inferior). The perimetry and visual field examination both show a central scotoma, as indicated by black or brown areas (E; colors represent percentage loss of vision)