Visual Disturbances Flashcards Preview

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Flashcards in Visual Disturbances Deck (21):
0

This visual disturbance where a person has a LENS that is TOO THICK or EYEBALL that is TOO LONG.

Myopia

1

MYOPIA is corrected by __________.

ConCAVE Lenses

2

This visual disturbance where the person has a LENS that is TOO THIN or the EYEBALL is TOO SHORT.

Hyperopia

3

HYPEROPIA is corrected by ____________.

ConVEX Lenses

4

This is a visual disturbance where there is a LACK of ACCOMMODATION because the lens had ELASTICITY and cannot be thickened enough.

Presbyopia

5

PRESBYOPIA is corrected by __________.

Bifocals

6

This visual disturbance is also known as NEARSIGHTEDNESS.

Myopia

7

This visual disturbance is also known as FARSIGHTEDNESS.

Hyperopia

8

BIFOCALS have _______ lenses in the UPPER PART allowing for ________ vision.

Thin
Distance

9

BIFOCALS have _________ lenses on the LOWER part for _________ objects.

Thick
Nearby

10

This is a visual disturbance where the eye has UNEQUAL ARVATURE and the eye may be partly nearsighted, partly farsighted OR BOTH.

Astigmatism

11

True or False: ASTIGMATISM is associated with the retina.

FALSE, ASTIGMATISM is associated with the CORNEA.

12

True or False: with ASTIGMATISM, when light enters the eye, it is refracted more in one direction than the other.

TRUE, IN ADDITION it allows only part of the object to be in focus.

13

This visual disturbance is characterized by CLOUDING of the LENS due to AGING or INJURY.

Cataracts

14

CATARACTS were FORMALLY corrected by ______________.

Using glass with THICK lens

15

CATARACTS is CURRENTLY corrected by ______________.

Implanting a SUBSTITUTE LENS

16

This visual disturbance occurs when the BRAIN SUPPRESSES INPUT from one eye and depends upon info from the other eye.

Amblyopia

17

AMBLYOPIA is corrected by ____________.

Initially COVERING THE GOOD EYE, forcing the weak to function.

18

This visual disturbance occurs when the AQUEOUS HUMOR ACCUMULATES and pressure is put on the OPTIC NERVE.

Glaucoma

19

GLAUCOMA was FORMALLY corrected by ___________.

Iridectomy

20

GLAUCOMA is CURRENTLY treated with ________________.

A Laser