Leber’s Hereditary Optic Neuropathy – Page 19 of 56

Virtually all patients with the LHON mt 11778 progress to profound vision loss within weeks to months once vision loss is initially experienced. The second eye become affected within just several months and final VA is typically the same in each eye. Visual fields are far better then VA to assess change over time. When VA drops, many patients with various optic nerve and macula disorders change fixation to a more sensitive retinal location. With standard fields, the visual field loss “moves” when fixation is altered. Unlike standard fields, maia™ monitors eyes position, corrects for change in fixation 25 times/sec and tests the same points on any future maia™ visual field.