DISORDERS - DISORDERS Detached retina Retina detached from...

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DISORDERS: Detached retina Retina detached from choroid If the retina is torn, vitreous humor may leak through the tear and cause the retina to pull away from the choroid Most common cause of retinal detachment is a blow to the head Symptoms include flashes of light, blurred vision, loss of peripheral vision Repair by surgery Cataracts Decrease in the transparency of the lens Most cataracts are age-related or diabetes related Replace with artificial lens Glaucoma Aqueous humor normally drains from the eye and returned to the venous blood by the Canal of Schlemm In glaucoma, the canal of Schlemm is blocked Excess fluid increases pressure inside the eye, pressing on blood vessels that supply the eye This may decrease the blood supply to the retina or optic nerve; cells in these two structures may die If not treated, ultimately results in blindness Develops slowly over several years Approximately 2.5 million Americans have glaucoma Tonometer – measure the intraocular pressure or IOP;
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This note was uploaded on 07/12/2011 for the course NURSING 000 taught by Professor Clark during the Spring '11 term at Alabama.

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DISORDERS - DISORDERS Detached retina Retina detached from...

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