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;
20 Cards in this Set
- Front
- Back
|
Sclera
SKLEH-rah |
cosists of the "white" cornea, Iris, conjunctiva and lacrimal gland
|
|
|
3 parts of the eye
|
Sclera, choroid, retina
|
|
|
Cornea
|
the "window" of the eye.
part of the front surface of the sclera |
|
|
Keratitis
|
inflamation of the cornea
|
|
|
Iris
|
the colored muscular part of the eye that can contract or dilate to allow more or less light in
|
|
|
Conjunctiva
|
lines the eyelids and covers the sclera in front
|
|
|
conjunctivitis
|
inflamation of the conjunctiva
|
|
|
lacirmal Gland
|
glands that produce tears. located in the upper portion of the orbit
|
|
|
Ciliary body
|
mucous membrane that covers the front of the eye
|
|
|
Choroid
KOH-royd |
middle layer of te eyeball and contains a dark pigment to prevent the scattering of incoming light rays
|
|
|
Pupil
|
opening at the center of the iris that regulates the amount of light entering
|
|
|
Lens
|
directly behind the pupil.
held in place by a ligament attached to the ciliary muscle |
|
|
Presbyopia
|
losing focus on close objects because as you age, the lenses lose some elasticity and can no longer buldge enough to bring obj. into focus
|
|
|
Retina
|
innermost layer of the eyeball.
rods and cones |
|
|
Rods
|
microscopic photoreceptor
stimulated by dim light receptors for night vision |
|
|
Cones
|
stimulated by bright light
receptors for daytime vision 3 types, each sensitive to a different color red green, and blue allow you to distinguish between colors |
|
|
Fovea centralis
|
small depression in the back of the eye that contains the greatest concentration of cones
|
|
|
Aqueous humor
|
watery fluid in front of the lens
constantly being formed, drained and replaced in anterior chamber |
|
|
Vitreous humor
|
a jelly like fluid behind the lens (posterior chanber)
|
|
|
Glaucoma
|
when internal pressure in the eye increases and damage that will lead to blindness occurs
|
