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20 terms

The Eye

STUDY
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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