Term
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Definition
| refraction beds light, pupillary constriction, accommodation |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| farsightedness due to aging |
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Term
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Definition
| unequal bending of light rays from irregular corneal curvature |
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Term
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Definition
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Term
| Eye changes associated with aging |
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Definition
| appearance, cornea, ocular muscles, lens, iris, pupil, color vision, tears. |
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Term
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Definition
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Term
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Definition
| diabetic retinopathy, macular degeneration, retinal detachments |
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Term
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Definition
| lens is biconvex, refractive structure suspended behind the iris. This is the opacity of the lens that distorts the image projected onto the retina. progressive loss of vision. |
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Term
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Definition
| age-related is the most common: altered metabolic process within lens causes accumulation of water. alteration in lens fiber structure affects the lens transparency. |
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Term
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Definition
| traumatic, radiation/UV light exposure, age-related, long-term corticosteroid use. |
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Term
| post-op care for cataracts |
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Definition
| antibiotic and corticosteroid drops, patch/protective shield, eyeglasses, safety. |
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Term
| S&S of complications post cataract removal |
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Definition
| sharp, sudden pain, increased bleeding or discharge, lid swelling, decreased vision, flashes of light or floating shapes |
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Term
| activities that increase intraocular pressure |
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Definition
| bending from the waist, sneezing, coughing, blowing nose, straining to have bowel movement, vomiting, sex |
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Term
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Definition
| group of ocular disorders characterized by increased IOP, optic nerve atrophy, peripheral visual field loss. |
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Term
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Definition
| most common. usually bilateral and asymptomatic. resistance to the outflow of aqueous humor. IOP gradually builds |
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Term
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Definition
| mechanism reducing outflow of aqueous is angle closure: lense bulges forward as result of age-related process. acute symptoms: sudden, excruciating pain in or around eye, N/V, bluured vision, colored halos around lights. immediate intervention required. |
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Term
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Definition
| facilitate aqueous humor outflow. Pilocarpine |
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Term
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Definition
| reduces IOP. increases extracellular osmolarity so intracellular H2L moves to extracellular and vascular spaces. glycerin |
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Term
| Beta-adrenergic antagonists |
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Definition
| decrease aqueous formation--timolol |
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Term
|
Definition
| facilitate aqueous outflow--latanoprost |
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Term
| carbonic anhydrase inhibitors |
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Definition
| decreases aqueous formation--diamox, cardase |
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Term
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Definition
| decreases aqueous formation and increases outflow--epinephrine, hydrochloride |
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Term
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Definition
| reduce vitreous volume--glycerin, mannitol, isosorbide. |
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Term
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Definition
| occurs when the outer pigmented layer and the inner sensory layer of the retina separate |
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Term
| retinal detachment clinical manifestations |
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Definition
| shade across vision of one eye, "cobweb", bright flashing lights, sudden onset and great number of floaters, no pain |
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Term
| retinal detachment causes |
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Definition
| retinal break, spontaneous, aging, severe myopia, trauma, diabetic retinopathy, cataract/glaucoma surgery, family history |
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Term
|
Definition
| push wall of eye against retina with synthetic band: may also do vtrectomy |
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