impaired vision caused by irregularities in the curvature of the cornea or the lens
The area on the retina that marks the site of intrance of the optic nerve.
No perception of visual stimuli; lack or loss of ability to see.
Less then 20/200 vision with corrective eyeglasses.
A system of writing and printing by means of raised points representing letters; enables people with a visual disability to read by touch.
Clouding or opacity of the lens of an eye
Inability to distinguish between certian colors; most common in red/green confusion; color vision is a function of the cones of the retina.
Double vision; perception of two images of a single object
Group of diseases of the eye characterized by intraocular pressure from pathologic changes in the optic disc; person have visual-field defects
farsightedness; eyeball is shorter behind the retina; vision is better for distant objects than for near objects
nearsightedness; longer eyeball from front to back so the image is focused in front of the retina
night blindness; may be hereditary or related to vitamin deficiency
pertaining to the eye
physician who specializes in diagnosing and prescribing tx for defects, injuries, and diseases of the eye (obsolete term: oculist)
the branch of medicine that deals with the anatomy, diagnosis, pathology, and tx of the eye
tech who prepares and adapts lenses; fills Rx from an opthamologist
a specialist in optometry, the measurement of visual acuity and adaptation of lenses for correction of visual defects
inflammation of the retina
noninflammatory disease of the retina; identified by the chronic disease of which it is a symptom; for example, diabetic retinopathy reflects the retinal manifestations of diabetes mellitus, including microaneurysms