Medical study targets leading cause of blindness in elderly.
D000368:Aged; D001766:Blindness / Q000209:etiology* / Q000517:prevention & control; D006801:Humans; D007511:Ischemia / Q000150:complications*; D009900:Optic Nerve / Q000098:blood supply*; D009901:Optic Nerve Diseases / Q000150:complications