What part of the eye is the pupil?
The dark part surrounded by the coloured part (iris).
What is the conjunctiva?
Membrane lining on the anterior portion of the eyeball; covers the cornea.
Describe conjunctivitis.
When bv dilate from infection or dilation, thus giving the sclera a reddish colour.
Accommodation refers to ___.
the normal adjustment of the eye to focus.
What is the cornea?
The transparent layer that extends over the front portion of the eyeball.
Where is the lens located?
Behind the pupil.
The optic chiasm is the ___.
point which the optic nerve fibers crossover.
What does the optic nerve do?
It carries nerve impulses from the retina to the bran.
What part of the eye does light pass?
The pupil
What part of the eye determines how much light passes through it?
The iris; it can constrict and expand the pupil, thus determining how much light can pass through.
aque/o
water
blephar/o, palpebr/o
eyelid
combining form of pupil
cor/o
combining forms of iris
iri/o, irid/o
combining form for eye
ophthalm/o
opt/o, optic/o
eye, vision
combining form of optic disc
papill/o
combining form of the lens
phac/o
vitre/o
glassy (vitreous)
-opia, -opsia
vision
-tropia
to turn
What is astigmatism?
A result of a defective curve of the cornea or lens causing vision defects.
Hyperopia or farsightedness means what?
Can see far, but not close near.
Myopia is nearsightedness. What does it mean?
You can see near, but not far.
What is the term used for impairment of vision due to old age and the reduction of lens accommodation?
Presbyopia
What does glaucoma do?
Damages the retina and optic nerve due to pressure within the eyeball and can cause vision problems.
Diplopia means ___.
having double vision
What is strabismus?
Abnormal positioning of the eye.
What is ectropian?
Sagging of the eyelid.
What is ptosis?
Drooping of upper lid due to trauma or neuromuscular problems.
___ is the removal of the entire eyeball.
Enucleation
What is the external auditory meatus?
The opening into the ear canal.
What is the point where the optic nerve fibers cross?
Optic chiasm
The optic disc is the ___.
blind spot
What structures of the retina detect dim light and peripheral region?
Rod
What is the jelly-like material in the posterior chamber of the eye?
Vitreous humor
dipl/o
double
combining form of gray
glauc/p
mi/o
smaller, less
scot/o
darkness
What is the pinna/auricle?
Projecting flap of the ear
AD
Right ear
Abbreviation for acute otitis media
AOM
Abbreviation for the left ear
AS
EENT
Eyes, ears, nose and throat
ENT
Ears, nose and throat
HEENT
Head, eyes, ears and throat