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A&P1 Eye Practice

Practice for A&P1 DelTech Owens Eye Test

QuestionAnswer
What are the 3 layers of the eye? sclera, choroid, retina
The tough, whitish outside layer of the eyeball is called the __. sclera
The colored vascular middle layer of the eyeball is called the __. choroid
The inside layer of the eyeball, which contains receptors and rods and cones, is called the __. retina
The anterior portion of the sclera, which is clear to allow light to enter, is called the __. cornea
The mucous membrane that lines the visible part of the eye and inner surface of the eyelids is called the __. conjunctiva
The anterior portion of the eye that covers the iris and pupil and aqueous humor is called the __. cornea
The anterior portion of the choroid layer, which contains two sets of smooth muscles that allow dilation and constriction of the pupil, is called the __. iris
The opening at the center of the iris that changes in diameter to allow more or less light in is called the __. pupil
The structure behind the iris that bulges or flattens out to focus light rays on the retina is called the __. lens
What are the 2 types of fluids in the eye? aqueous humor, vitreous humor
The 2nd cranial nerve that carries stimuli from the rods and cones to the brain is the __ __. optic nerve
The chart used to determine a person's visual acuity is called a __ __. Snellen chart
The Snellen Chart uses a formula called d/D. If you have 20/20 vision, that means you can see at 20 feet what a __ person can see clearly at 20 feet. normal
The Snellen Chart uses a formula called d/D. If you have 20/40 vision, that means you can see at 20 feet what a normal person can see clearly at __ feet. 40
An astigmatism chart is used to test for astigmatism. The chart tests for defects in the __ __ of the lens and the cornea. refractive surface
A person with a visual acuity of 20/10 would have __ __ visual actuity. above average
What is the area of the eye that can't see but the brain compensates for? (It also causes us to have a "blind spot.") optic disk
When both eyes are open, the brain compensates for the blind spot by __ __. filling in
The irridescent layer of the eyes is called the __ __. tapitum lucidum
What maintains the shape of the eye? vitreous humor
Created by: IsaacJ