Fig. 3From: A retrospective analysis of characteristics of visual field damage in patients with Leber’s hereditary optic neuropathyCharacteristics of fundus in LHON patients. a The early manifestation of fundus (within 1 week): retinal vein and artery expanded around the optic disk. Edema and hyperemia surrounding the optic disc were observed. b The late stages (over 6 months): retinal vein and artery have become tapered and stiff. The optic disc is pale and atrophicBack to article page