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40 Cards in this Set
- Front
- Back
3 layers of eyes |
1. sclera 2. choroid 3. retina |
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sclera |
white fibrous tissue, covers "white" of the eye |
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choroid |
vascular layer. has dark pigmentation to prevent light from reflecting internally and is heavily vascularized to deliver blood to the retina |
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retina |
visual receptive layer |
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vitreous humor |
watery fluid that fills much of the eye, helps maintain curve of cornea |
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subjective assessment of eye |
any visual difficulty (decreased acuity, blurring of vision?) pain? strabismus? diplopia? watering of eyes, discharge or redness? any history of eye problems? use of glasses or contact lenses? floaters? blind spots?
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scotoma |
blind spot surrounded by an area of normal or decreased vision, occurs with glaucoma and optic nerve disorders |
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photophobia |
inability to tolerate light |
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diplopia |
perception of two images of single object |
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strabismus |
deviation in the axis of the eye |
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presbyopia
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decrease in the power of accomodation with aging, is suggested when the person moves the card farther away
due to glasslike, hard lens |
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nystagmus |
fine, oscillating movement best seen around the iris. Occurs with disease of the semicircular canals in the ears, a paretic eye muscle, mutiple sclerosis, or brain lesions |
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hyperthyroidism |
lid lag and severe exophthalmos |
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exophthalmos |
protruding eyes |
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enophthalmos |
sunken eyes |
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pallor of lower lid |
may indicate anemia |
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scleral icterus |
even yellowing of the sclera extending up to the cornea, indicating jaundice |
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eye exam - inspection |
general apperance conjunctiva lacrimal gland sclera
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ptosis |
drooping of upper lid |
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edema causes |
hypothyroidism, renal failure, CHF |
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sagging causes |
myostemia gravis, ocular motor cranial nerve damage |
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further eye inspection |
1. orbital area 2. eyelids 3. conjuctivae and sclera 4. corneal clarity 5. iris 6. pupils 7. pupillary light reflex |
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conjunctivae |
clear and show the normal color of pink over the lower lids and white over the sclera with no change, swelling or lesions |
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presence of excessive tearing of lacrimal apparatus |
may indicate blockage of nasolacrimal duct. press index finger against sac just inside the lower orbital rim |
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arcus senilis |
commonly seen around the cornea. grey white arc or circle around the limbus due to deposition of lipid material. may look thickened or raised but no effect on vision |
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iris |
colored part. acts as a diaphragm |
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pupils |
round, regular, equal, 3-5 mm |
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pupillary light reflex direct light reflex consensual light reflex |
darken room, focus on far object, shine light from the side results in 1- constriction of the same sided pupil (direct light reflex) and 2 - simultaneous constriction of other pupil (consensual light reflex) |
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accomodation |
adjustment of eye to various distances test by having patient look at a further object, then a closer object and look for pupillary constriction and convergence of the axis of the eyes |
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convergence |
eyes move inward as object gets closer |
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PERRLA |
pupils equal, round, react to light and accommodation |
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distance person stood from chart |
visual acuity denominator |
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cataract formations
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1/3 age related vision loss
lens opacity resulting from clumping of proteins in the lens |
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glaucoma
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2/3 causes of age related vision loss
increased intraocular pressure gradual loss of peripheral vision is common= chronic open angle glaucoma |
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macular degeneration
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3/3 causes of age related vision loss
breakdown of cells in the macula of the retina loss of central vision common cause of blindness |
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scleral icterus
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even yellowing of sclera extending up to the cornea indicating jaundice
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anisocoria
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pupils of 2 different sizes
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ocular fundus
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internal surface of the retina
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media
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anterior chamber, lens, vitreous
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red reflex
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caused by reflection of ophthalmoscope light off the inner retina
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