Acute zonal occult outer retinopathy is noninfectious zonal dysfunction of outer retina often adjacent to optic nerve. It is accompanied by temporary disappearance of retinal fotoreceptor layer, visual acuity drop and late pigmentary fundus changes. Authors present a case report of a patient with unilateral involvement and spontaneous visual acuity resolution followed by quick reappearance of photoreceptor layer on OCT.