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;
51 Cards in this Set
- Front
- Back
Oculus Dexter |
Right eye, O.D. |
|
Oculus sinister |
Left eye, O.S. |
|
Oculus Uterque |
Both eyes, O.U. |
|
Globe |
Correct name for eyeball. |
|
Antero-posterior diameter of the globe |
24mm |
|
Bony cavity/socket that houses the eye |
Orbit |
|
Protects the eye and provides a structure for the attachment of the ocular muscles |
Orbit |
|
Where the upper and lower eyelids meet |
Canthus |
|
"White of the eye" |
Sclera |
|
White tissue that covers the surface of the globe. |
Sclera |
|
Protects and shapes the eye |
Sclera |
|
Transparent structure on the front surface of the globe. |
Cornea |
|
Has .58mm thick center, and 1mm thick at periphery |
Cornea |
|
Has five different layers |
Cornea |
|
Folds of skin thay serve as protective coverings for the globe and cornea. |
Eyelids |
|
Regulate incoming light |
Eyelids |
|
Thin transparent mucous membrane that lines the posterior surface of the lids |
Conjunctiva |
|
"Shutter-like" muscle that forms the colored part of the eye |
Iris |
|
Controls the amount of light entering the eye |
Iris |
|
Opening of the iris |
Pupil |
|
Dilates in dim light, constricts in bright light |
Pupil |
|
Watery substance that fills the anterior and posterior chambers |
Aqueous humor |
|
Maintains the shape of these chambers, thus regulating the eyes intraocular pressure |
Aqueous humor |
|
Supplies the crystalline lens & cornea w/ nutrients |
Aqueous humor |
|
Constantly being replaced and drains through the Canal of Schlemm |
Aqueous humor |
|
Controls the focusing power (accommdation) of the eye by changing the shape of the crystalline lens |
Ciliary Muscle |
|
Resilient, transparent structure in the eye that focuses light by changing its front surface curvature |
Crystalline lens |
|
Located near the front of the eye, directly behind the pupil |
Crystalline lens |
|
Biconvex shape |
Crystalline lens |
|
Tissue membrane thay covers the inside back of the eye |
Retina |
|
Contains 10 layers of nerve endings as well as rods and cones |
Retina |
|
Light receptor cells that send visual impulses to the brain via the optic nerve |
Rods & Cones |
|
Enables the eye to see at night |
Rods |
|
Gives the eye color perception |
Cones |
|
Sends impulses from the retina to the brain for interpretation as visual images |
Optic nerve |
|
Located on the retina |
Macula |
|
Contains only visual receptor cells and, therefore, is the location of the most acute vision |
Fovea |
|
Layer of blood vessels in the back of the eye between the sclera and the retina |
Choroid |
|
Nourishes the retina |
Choroid |
|
Jelly-like substance found between the back of the crystalline lens and the retina |
Vitreous humor |
|
Maintains the eyes proper shape and temperature |
Vitreous humor |
|
Margin at which the cornea and sclera meet |
Limbus |
|
How many eye muscles that the eye moves in different directions |
6 |
|
Light rays converge on retina, eye has no refractive error. Eye is considered normal, requires no corrective lens. |
Emmetropia |
|
Needs some type of correction, light rays entering the eye do not come to a point of focus on retina. |
Ametropia |
|
Significantly, unequal refractive error in the two eyes. |
Anisometropia |
|
One eye is myopic, and the other eye is hyperopic |
Antimetropia |
|
Reduction in visual acuity that cannot be corrected by a lens. Also known as "lazy eye" (needs to be treated w/ occluder lenses) |
Amblyopia |
|
Two diff images are formed on the retina. Also knkwn as "Double Vision" |
Diplopia |
|
Caused by a muscle imbalance that prohibits binocular vision, known as "cross eyed" |
Strabismus |
|
Abnormal sensitivity or intolerance of light |
Photophobia |