A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A  
Term
Meaning
aberration the failure of refracted light to focus to a common point.
abrasion
 an erosion of the surface cell layers.
accommodation the "automatic" adjustment the eye makes in order to focus on objects at different distances.
after-image an image which remains after the light stimulation to the retina has stopped.
amaurosis blindness as a result of any disease.
amblyopia poor sight in a healthy eye whcih does not fully improve with corrective lenses.
ametropia any sight problem caused by an improperly focused image on the retina.
aniridia lack of the iris at birth.

 

B  
Term
Meaning
bifocal a corrective lens which has two focusing distances, near and far.
binocular vision the ability of the brain to fuse images from both eye together into a single image.
biomicroscope an instrument for examining the front and interior of the eye under magnification.
blepharitis an inflammation of the eyelids.
blepharospasm a twitch of the eyelids, usually due to eye strain.

 

C  
Term
Meaning
cataract cloudiness of the crystalline lens in the eye
chalazion large build up on top of a gland
cone receptor used for color vision
conjunctiva guards as a barrier between the eye and air
contact lens additional lens for the eye to aid in vision

 

D  
Term
Meaning
dacryocystitis build up in the nasolacrimal sac
depth perception ability to see in 3 dimensions
dyslexia comprehension impairment involving they eye and brain

 

E  
Term
Meaning
ectropion results when the eyelids turn out
entopion eyelids turn in affecting conjunctiva
esophoria condition in which eyes focus to the inside
extrinsic muscles muscles responsible for controlling all eye movements

 

F  
Term
Meaning
flashes quick abnormal flashes of light seen by the eye
floaters dark spots seen hovering around
fovea within the macula, the innermost detailed vision
fusion when the brain combines two images of each of the eyes into one

 

G  
Term
Meaning
glare over abundance of light on a particular surface
glaucoma large pressure put on the eye resulting in vision loss

 

H  
Term
Meaning
hordeolum resembling a style; an infection on the eyelid region
hyperphoria problem with eye looking up unconsciously
hypertropia problem with eye constantly looking down
hypopion large sac of pus built up on eye

 

I  
Term
Meaning
Infrared Invisible to the human eye, form of radiation
iris gives eye the color it has
iritis the unusual enlargening of the iris

 

 

K  
Term
Meaning
keratitis corneal swelling
keratoconus gradual enlargement of corneal shape
keratometer used to measure shape of cornea

 

L  
Term
Meaning
laser Light Amplicfication by Stimulated Emission of Radiation
lens used to transmit light
lens implant used after cataract surgery to restore vision
luxation when lens is disrupted from usual position

 

M  
Term
Meaning
macula used for detailed vision; driving, reading, etc.
macular degeneration gradual deterioration of macular region
miosis pupil contracts
monocular person with one ey
multifocal special contact lens with multiple focusing options
myopia nearsightedness

 

N  
Term
Meaning
night blindess common condition which one can't see at night
nystagmus uncontrolable movement of the eye

 

O  
Term
Meaning
oculist physician specializing in eye disorders
opacity opaqueness in eyes; can result in cataracts
optic nerve eye's connection to the brain
orbit socket which encompasses the eye

 

P  
Term
Meaning
papillitis enlargemnet of one's optic disc
paresis semi-paralyzed
peripheral vision side sight; overall picture
pinguecula small bump or irritation located on conjunctiva
pink eye condition which conjunctiva becomes inflamed

 

R  
Term
Meaning
refraction bending of light through different objects
retina layer inside the eye responsible for recepting light
rods opposite of cones, catch shapes, objects, light intensity

 

S  
Term
Meaning
sclera white covering of one's eye
squint to look with eyes only partially open
sty infection of the eyelid
subluxation lens of eye is not in correct position

 

T  
Term
Meaning
tachistoscope used to lenghten span of sight
tear film layer covering cornea
trachoma viral infection causing scarring on the corneal tissue
trifocal lens with three perspectives of vision
tropia having a crossed eye

 

U  
Term
Meaning
uveitis abnormal uvea enlargment
ultraviolet excessive radiation causing skin cancer and other eye problems

 

V  
Term
Meaning
visual acuity the best site possible; otherwise know as 20/20
visual illuison misinterpretation by the brain of an image
vitreous humor jelly substance which hold the retina firmly in place
visual therapy training aimed at improving the eyes

 

W  
Term
Meaning
wall eyed when an eye strays out

 

 

Z  
Term
Meaning
Zonule of Zinn bond that holds the lens to the eye

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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