Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
36 Cards in this Set
- Front
- Back
|
lacrimal gland?
|
produces tears
|
|
|
conjunctivitis
|
"pink eye" infection of conjunctiva that results in blood vessel inflammation
|
|
|
what makes up the fibrous tunic of the eyeball
|
the sclera and cornea
|
|
|
what is the sclera
|
-white of the eye
-helps give eye shape |
|
|
hyperopia?
myopia? |
hyperopia- far sighted
myopia- near sighted |
|
|
strabismus
|
masalignment of the eyes NOT "lazy eye"
-will lead to loss of depth and motion perception in children -will lead to DIPLOPIA in adults - double vision |
|
|
conjunctiva
|
membrane that covers the inner surface of the eyelid- (protects)
|
|
|
cornea
|
*most common organ blood supply
AVASCULAR -provides most focusing of eye -most common organ transplant |
|
|
ciliary body
|
produces aqueous humor
(muscle controls tension on lens) |
|
|
cataracts
|
#1 cause of BLINDNESS world wide
-disorder when lens becomes cloudy |
|
|
astigmatism?
|
misshaped cornea results in blurry vision
|
|
|
what makes up the vascular tunic?
|
iris+ciliary body+ choroid
(middle layer) |
|
|
iris?
|
the colored part
its the muscles that regulate the amt of light that enters the eye through the PUPIL |
|
|
presbyopia?
|
it is an age-related decline in near and far focusing?
|
|
|
glaucoma
|
acumulation of aqueous humor
#2 cause of blindness worldwide |
|
|
floater
|
harmless breakdown product of the vitreous humor
|
|
|
night-blindness
|
poor vision due to vitamin A deficiency
|
|
|
retina
|
layer of the eye that contains photoreceptors
|
|
|
macula/fovea
|
retinal area with most cone photoreceptors
|
|
|
rods
|
black/white vision
photoreceptors that detect black/white |
|
|
optic radiation
|
terms for axons from LGN (lateral geniculate neurons) to primary visual cortex
|
|
|
flashers
|
serious problem that often indicates retinal detachment
|
|
|
choroid
|
vascular layer (greatest blood supply per area in body)
absorb light can develop melanoma "skin cancer" |
|
|
optic disc
|
where the optic nerves form
lacks photoreceptors= blind spot |
|
|
cones
|
-color vision
-3 photopigments red, green, blue |
|
|
night blindness
|
results from deficiency of vitamin A
|
|
|
lateral geniculate nucleus
|
thalmic nucleus that receives visual info
|
|
|
optic chiasm
|
damage to this produces tunnel vission
|
|
|
optic nerve
|
damage to this results in blindness in the eye
|
|
|
pupil
|
iris opening that allows light to enter eye
|
|
|
superior colliculus
|
part of the visual pathway for tracking of objects
|
|
|
color blindness
|
genetic deffect in opsin protein
|
|
|
diplopia
|
double vision
|
|
|
dry eyes
|
leading cause of undiagnosed eye problems
|
|
|
emmetropia
|
normal vision
|
|
|
retinitis pigmentosa
|
genetic abnormality where photoreceptors die
|
