Advertisement Upgrade to remove ads

sclera

composed of tough,white connective tissue

cornea

anterior transparent part of the fibrous tunic

aqueous humor

fluid filling the anterior segment of the eye

lens

important light-bending structure of the eye

retina

sensory tunic of the eye

fovea centralis

tiny pit in the macula lutea; contains only cones

iris

contains muscle that controls the size of the pupil

vitreous humor

substance occupying the posterior segment of the eyeball

choroid

forms most of the pigmented vascular tunic

canal of schlemm

drains the aqueous humor from the eye

suspensory ligament

attaches the lens to the ciliary body

optic disc

the blind spot

conjunctiva

secretes mucus to lubricate the eye

lacrimal glands

produce tears

astigmatism

caused by unequal curvatures of the lens or cornea

myopia

nearsightedness

hyperopia

inability to focus well on close objects

convergence

medial movement of the eyes when focusing on close objects

accomodation

ability to focus for close vision

refraction

light bending

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set