Practice for A&P1 DelTech Owens Eye Test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| What are the 3 layers of the eye? | sclera, choroid, retina
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| The tough, whitish outside layer of the eyeball is called the __. | sclera
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| The colored vascular middle layer of the eyeball is called the __. | choroid
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| The inside layer of the eyeball, which contains receptors and rods and cones, is called the __. | retina
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| The anterior portion of the sclera, which is clear to allow light to enter, is called the __. | cornea
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| The mucous membrane that lines the visible part of the eye and inner surface of the eyelids is called the __. | conjunctiva
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| The anterior portion of the eye that covers the iris and pupil and aqueous humor is called the __. | cornea
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| 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
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| The opening at the center of the iris that changes in diameter to allow more or less light in is called the __. | pupil
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| The structure behind the iris that bulges or flattens out to focus light rays on the retina is called the __. | lens
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| What are the 2 types of fluids in the eye? | aqueous humor, vitreous humor
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| The 2nd cranial nerve that carries stimuli from the rods and cones to the brain is the __ __. | optic nerve
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| The chart used to determine a person's visual acuity is called a __ __. | Snellen chart
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| 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
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| 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
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| An astigmatism chart is used to test for astigmatism. The chart tests for defects in the __ __ of the lens and the cornea. | refractive surface
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| A person with a visual acuity of 20/10 would have __ __ visual actuity. | above average
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| 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
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| When both eyes are open, the brain compensates for the blind spot by __ __. | filling in
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| The irridescent layer of the eyes is called the __ __. | tapitum lucidum
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| What maintains the shape of the eye? | vitreous humor
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
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Created by:
IsaacJ
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