title: Worldwide blindness.
abstract: Blindness affects approximately 42 to 52 million people worldwide. This article examines the major causes of blindness, including cataract, trachoma, glaucoma, onchocerciasis, nutritional deficiencies, and ocular trauma. Numerous case studies supplement the text.
authors.affiliation: Alcon Surgical, Houston, Texas.
authors.forename: M R
authors.initials: MR
authors.lastname: Grimes
authors.forename: M A
authors.initials: MA
authors.lastname: Scardino
authors.forename: J F
authors.initials: JF
authors.lastname: Martone
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001766:Blindness / Q000209:etiology*; D002386:Cataract / Q000150:complications; D005131:Eye Injuries / Q000150:complications; D005260:Female; D005901:Glaucoma / Q000150:complications; D014943:Global Health; D006801:Humans; D008297:Male; D008875:Middle Aged; D009855:Onchocerciasis / Q000150:complications; D014141:Trachoma / Q000150:complications; D014802:Vitamin A Deficiency / Q000150:complications; D014985:Xerophthalmia / Q000150:complications