Presbyopia in Nigerians.
D000328:Adult; D005260:Female; D006801:Humans; D006956:Hyperopia / Q000150:complications; D008297:Male; D008875:Middle Aged; D009216:Myopia / Q000150:complications; D009549:Nigeria; D011305:Presbyopia / Q000175:diagnosis* / Q000209:etiology; D011446:Prospective Studies