ch. 14 Flashcards
Anisocoria
Unequal pupil size
Accommodation
Adaption of the eye for near vision by increasing te curvature of the lens
Arcus senilis
Gray-white arc or circle around the limbus of the iris that is common with aging
Argyll Robertson pupil
Pupil does not react to light; does constrict with accommodation
Astigmatism
Refractive error of vision due to differences in curvature in refractive surfaces of the eye (cornea and lens)
A-V crossing
Crossing paths of an artery and vein in the ocular fundus
Bitemporal hemianopsia
Loss of both temporal visual fields
Blepharitis
Inflammation of the glands and eyelash follicles along the margin of the eyelids
Cataract
Opacity of the lens of the eye that develops slowly with aging and gradually obstructs vision
Chalazion
Infection or retention cyst of a meibomian gland, showing as a beady nodule on the eyelid
Conjunctivitis
Infection of the conjunctiva, “pinkeye”
Cotton-wool area
Abnormal soft exudates visible as gray-white areas on the ocular fundus
Cup-disc ratio
Ratio of the width of the physiologic cup to the width of the optic disc, normally half or less
Diopter
Unit of strength of the lens settings on the opthalmoscope that changes focus on the eye structure
Diplopia
Double Vision
Drusen
Benign deposits on the ocular fundus that show as round yellow dots and occur commonly with aging
Ectropion
Lower eyelid loose and rolling outward
Entropion
Lower eyelid rolling inward
Exophthalmos
Protruding eyeballs
Fovea
Area of keenest vision at the center of the macula on the ocular fundus
Glaucoma
A group of eye diseases characterized by increased intraocular pressure
Hordeolum
Stye; red, painful pustule that is a localized infection of hair follicle at eyelid margin
Lid lag
The abnormal white rim of sclera visible between the upper eyelid and the iris when a person moves the eyes downward
Macula
Round, darker area of the ocular fundus that mediates vision only from the central visual field