Ch 9: Review Exercises Flashcards
Sensory System
The scientific name for nearsightedness, in which the focal point is in front of the retina and distant objects appear blurred
Myopia
The visual defect caused by irregularity in the curvature of the lens or cornea
Astigmatism
Condition caused by continued high pressure of the aqueous humor, which may result in destruction of the optic nerve
Glaucoma
The scientific name for farsightedness, in which light rays are not bent sharply enough to focus on the retina when viewing close objects
Hyperopia
The vascular, pigmented middle layer of the eye
Iris
A vision receptor that is sensitive to color
Cones
The part of the eye that light rays pass through first as they enter the eye
Cornea
The membrane that lines the eyelids
Conjunctiva
The innermost layer of the eyeball that includes the receptors for the sense of vision
Retina
A vision receptor that functions well in dim light
Rods
The structure that alters the shape of the lens for accommodation
Ciliary Muscle
The watery fluid that fills much of the eyeball in front of the crystalline lens
Aqueous Humor
The muscle that regulates the amount of light entering the eye
Pupil
The jelly-like material located behind the crystalline lens that maintains the shape of the eye
Vitreous Humor
The central opening of the iris
Pupil
