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28 Cards in this Set

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