Age Related Eye Disease Study

 

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Most common cause decreased after 60. Small central area surrounding fovea; area acute central. Examination anterior chamber angle through a goniolens (special type contact lens). Group disorders in which certain colors cannot be accurately differentiated.

Separation from underlying pigment epithelium. Perception two images from one object; images may be horizontal, vertical or diagonal. Can be corrected by eyeglasses, contact lenses, or refractive surgery. Light-sensitive, specialized retinal receptor cell that works at low light levels (night ).

Inflammation usually subsides, but may need surgical removal. Focusing defect in which is overpowered.

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Opaque, fibrous, protective outer layer ("white ") that is directly continuous with cornea in front and with sheath covering optic nerve behind. Plastic lens that may be surgically implanted to replace eye's natural lens. Contains a high concentration cones and no retinal blood vessels. Optical defect in an unaccommodating ; parallel light rays are not brought to a sharp focus precisely on, producing a blurred retinal image.



Age Related Eye Disease Study

Technique used visualizing and recording location and size blood vessels and any affecting them; fluorescein dye is injected into an arm vein, then rapid, sequential photographs are taken as dye circulates. Assessment eye's ability to distinguish object details and shape, using smallest identifiable object that can be seen at a specified distance (usually 20 ft. Inflammation usually subsides, but may need surgical removal. Remnants an opaque lens remaining in, or opacities forming, after extracapsular cataract removal.

Characterized by generalized thinning and cone-shaped protrusion central cornea, usually in both eyes. Part that converts images from eye's optical system into electrical impulses that are sent along optic nerve transmission to brain. (Return to top) t tonometry (tuh-nah-mih-tree). Misalignment in which one deviates outward (away from nose) while other fixates normally.

Often due to inflammation iris or cornea. Main portion is usually focused distance (20 ft. Two general types: "Dry," which is more common, and "wet," in which abnormal new blood vessels grow under and leak fluid and blood (neovascularization), further disturbing function. Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women.

Usually becomes significant after 45. Physician (md) specializing in diagnosis and refractive, medical and surgical to and disorders. May be congenital or caused by trauma, or. (Return to top) u uvea, uveal tract (yu-vee-uh).

Tested with specially designed targets or cards. Ability to detect detail having subtle gradations in grayness between test target and background.

Age Related Eye Disease Study

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