Many people, especially males, experience color blindness, varying degrees of which range from inability to differentiate between red and green to total inability to see one or more colors. Damage to any area in the visual pathway—including the optic nerve, optic tract, optic chiasm, optic radiations, or visual cortex—will cause vision deficits or loss. Although not vision disorders themselves, diseases, disorders, and damage of the eye lid, eye, and bony orbit (eye socket) may—if severe and left untreated—result in reduced, impaired, or lost vision.
Bankes, James L. Kennerley. Clinical Ophthalmology—A Text and Colour Atlas. London: Churchill Livingstone, 1994.
Chawla, Hector Bryson. Ophthalmology. London: Churchill Livingstone, 1993.
Stein, Harold A., Bernard J. Slatt, and Raymond M. Stein. Ophthalmic Terminology-Speller and Vocabulary Builder. St. Louis: Mosby, 1987.
Marie L. Thompson
Science EncyclopediaScience & Philosophy: Verbena Family (Verbenaceae) - Tropical Hardwoods In The Verbena Family to WelfarismVision Disorders - Refractive Errors, Hyperopia/presbyopia, Other Refractive Errors, Strabismus, Nonparalytic Strabismus, Paralytic Strabismus - Myopia, Astigmatism, Glaucoma, Secondary glaucomas, Degeneration of the macula, Retinal dystrophies