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28 Cards in this Set
- Front
- Back
Under what type of light does the pupil get bigger?
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dim light
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Under what type of light does the pupil get smaller?
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bright light
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A pigment that gives color to the eye
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melanin
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What are the three layers of the eye?
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outer layer (sclera), middle layer (choroid), inner layer (retina)
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2 common eye ailments
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Conjunctivitis and Sty
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This eye ailment is also known as sore eyes
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Conjunctivitis
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What causes conjunctivitis?
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bacteria, viruses, allergies and environmental pollutants
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A person with this eye ailment has red swollen and teary eyes
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Conjunctivitis
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This eye ailment is similar to a pimple
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sty
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A sty is similar to what?
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pimple
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What causes a sty?
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infection with bacteria
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List 5 common eye defects
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1) Strabismus or squint 2) Astigmatism 3) Color blindness 4) Myopia or nearsightedness 5) Hyperopia or farsightedness
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An eye defect in which the two eyes can not focus on the same object
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Strabismus or squint
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Two examples of Strabismus or squint
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crosseye or walleye
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The inability to distinguish between the colors red and green
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color blindness
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Color blindness is the inability to distinguish between what two colors?
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red and green
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Eye condition in which the horizontal and vertical images do not focus on the same point and vision is blurred
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astigmatism
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What is the cure for color blindness
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there is no cure
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Eye condition when a person has good near vision but poor distant vision
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Myopia or nearsightedness
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Eye condition when a person has good distant vision but poor rear vision
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Hyperopia or farsightedness
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List ways to care for eyes
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good nutrition vitamin a
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You should care for the eyes by eating vegetables with what vitamin?
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vitamin a
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A medical doctor who treats eye diseases
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ophthalmologist
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Examines the eyes for eye defects and corrects them by means of eyeglasses
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optometrist
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Makes eyeglasses ordered by the ophthamologist or optometrist
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optician
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Good health habits for eyes
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1)Read with enough light 2)rest eyes when reading 3)do not get too close to television 4)Do not rub your eyes
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List ways of preventing eye damage
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1) wear safety glasses 2) never look directly at sun 3)keep away pointed objects
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The image focused in the retina is inverted. Why do you see the object of image in an upright position?
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because the brain interprets and corrects the inverted image into an upright position.
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