Disabilities Flashcards
Legally Blind
20/200
Low Vision
30 degree or lower/ 20/200 to 20/70 in better eye after correction
Tunnel vision
20 degrees or lower field of vision
Motion Perception
3/200 to 5/200 rally moving, not still, objects
Light perception
vision below 3/200 seeing bright light from 3 feet away but not detecting movement
Total Blindness
Inability to see strong light shined into eye
Congenital blindness
Born blind
Adventitious Blindness
losing eyesight after birth
Myopia
nearsightedness
Hyperopia
Farsightedness
Astigmatism
blurred near and far vision
Presbyopia
aging related farsightedness
Bifocal
nearsighted people also develop presbyopia
Nystagmus
rapid vertical and horizontal eye movement
Strabismus
crossed or turned out eyes
Amblyopia
Lazy eye
Achromatic
Color blindness
Albinism
lack of pigmentation causing reflective errors, photosensitivity and other problems
Retinis pigmentosa
eye rods and cones fail to regenerate causing night blindness, tunnel vision/central vision loss
Cataracts
congenital or age-related cloudiness/opacity oxeye lens. Impaired vision or blindness if not removed
Conjunctivitis
Inflammation of conjunctiva/inner eyelid lining and scleral covering
Diabetic retinopathy
retinal hemorrhages from vascular changes cause blindness
Glaucoma
increased inner eye fluid pressure impairs eye sight, beginning with peripheral vision
Slight hearing loss
hearing 25-40 dB at all tested frequencies. can’t understand whispered speech