Ch. 14 Eyes Flashcards
1
Q
external eye
A
- eyelids
- palpebral fissure
- limbus
- canthus
- conjunctiva
- lacriman apparatus
- tarsak plates
- meibomian glands
2
Q
extraocula muscles
A
- superior rectus
- inferior rectus
- lateral rectus
- medial rectus
- superior oblique
- inferior oblique
3
Q
internal anatomy
A
-outer later= sclrea
-middle layer=choroid
+ciliary body and iris, pupil, lens, anterior chamber
-inner layer=retina
+optic disc, retinal vessels and macula
4
Q
visual pathways and visual fields
A
- refractino of light rays
- crossing of fibers at optic nerve
5
Q
visual reflexes
A
- pupillary light reflex
- fixation
- accomodation
6
Q
dev.care
A
- macular is not matures until 8 months
- 8 years of age, eyes are fully developed
+ visual acuity decreases
+cataract: lens becomes solid (opaque)
7
Q
presbyopia
A
the keenest vision begins to fade
8
Q
visual acuity
A
decreases with age
CN 2
9
Q
Cataract
A
- common in again adult
- lens becomes solid (opaque)
10
Q
Glaucoma
A
- common in aging adult
- increase in interocular pressure
- dark and fuzzy around the edges
- african americans are more likely
11
Q
macular degeneration
A
break down of cells in macular
- central vision is lost
- caucasion over the age of 40
12
Q
hyperopia
A
farsighted
13
Q
myopia
A
nearsighted
14
Q
exotropia (strabismus)
A
outward turning of eye
15
Q
esotropia (strabismus)
A
inward turning of eye
