Chapter 17 Practice Eye Flashcards
impairment of vision due to old age
presbyopia
white portion of the eye
sclera
swelling in the region on the optic disc
papilledema
nearsightedness
myopia
double vision
diplopia
pertaining to paralysis of the ciliary muscles of the eye
cycloplegic
inflammation of the cornea
keratitis
defective curvature of the cornea of lens of the eye
astigmatism
absence of the lens of the eye
aphakia
process of recording blood vessels in the back of the eye after intravenous injection of a dye
fluorescein angiography
fluid produced by the ciliary body; circulates through the anterior chamber of the eye
aqueous humor
clouding of the lens, causing decreased vision
cataract
loss on vision in one half of the visual field
hemianopsia
inflammation of the iris
iritis
abnormal deviation of the eye (esotropia and exotropia)
stabismus
pupils are of unequal size
anisocoria
visual examination of the eye
ophthalmoscopy
progressive damage to the yellowish region of the retina (lateral and slightly below the optic disc)
muscular degeneration
small, hard cystic mass on the eyelid
chalazion
delicate membrane lining the eyelids and covering the anterior eyeball
conjunctiva
increased intraocular pressure results in retinal and optic nerve damage
glaucoma
deterioration of the macula lutea of the retina
muscular degeneration
retinal microaneurysms, hemorrhages occur secondary to an endocrine condition
diabetic retinopathy
localized purulent infection of a sebaceous gland in the eyelid
hordeolum (stye)
clear tissue that covers the front portion of the eye
cornea
having two sides that are rounded, elevated and curved evenly; characteristic of the lens of the eye
biconvex
middle, vascular layer of the eye, between the retina and sclera
choroid
tiny pit or depression in the retina that is the region of clearest vision
fovea centralis
normal adjustment of the eye to focus on objects from far to near
accommodation
structure on either side of the lens that connects the choroid and the iris; it alters the shape of the lens
ciliary body
area behind the cornea and in front of the lens and iris
anterior chamber
soft, jelly-like material behind the lens; maintains the shape of the eyeball
vitreous humor
photoreceptor cell essential for vision in dim light and for peripheral vision
rod
photoreceptor cell in the retina; responsible for colour and central vision
cone