描述
Ornithine Aminotransferase Deficiency, (OAT Deficiency, Ornithine Keto Acid Aminotransferase Deficiency, OKT Deficiency, Ornithine-Delta-Aminotransferase Deficiency, Hyperornithinemia With Gyrate Atrophy Of Choroid And Retina; Hoga Gyrate Atrophy, Ornithine Aminotransferase) is caused by a defect in the gene that codes for ornithine-delta-aminotransferase, which catalyzes the major catalytic reaction for ornithine. A defect in this enzyme causes accumulation of ornithine. Symptoms include tunnel vision, night blindness, myopia, and progressive vision loss.