Refractive Errors

Question 1

What test tests the visual acuity?

Answer 1

Snellen’s chart

Question 2

Order of test of visual acuity

Answer 2

right eye then left eye then both eyes

Question 3

normal visual acuity

Answer 3

20/20

Question 4

legal blindness score

Answer 4

20/200

Question 5

what does 20 and 200 mean in 20/200?

Answer 5

20 is the numerator which means physical distance
200 is the denominator which means reference point

Question 6

ambulation priority

Answer 6

safety (assisted)

Question 7

if a person’s blind, who will walk first, the nurse or the client?

Answer 7

the nurse

Question 8

device used by blind people

Answer 8

Straight cane with red tip

Question 9

what animal is best for guiding blind people?

Answer 9

Dog

Question 10

how could blind people compensate?

Answer 10

Substitute other senses

Question 11

what problem is present when there is a problem in bending light?

Answer 11

refractive errors

Question 12

Cause of myopia

Answer 12

long lens

Question 13

cause of hyperopia

Answer 13

short lens

Question 14

cause of astigmatism

Answer 14

irregular shape of lens

Question 15

cause of presbyopia

Answer 15

Aging

Question 16

sight of myopia

Answer 16

near sighted

Question 17

sight of hyperopia

Answer 17

far sighted

Question 18

sight of astigmatism

Answer 18

blurry both near and far

Question 19

sight of presbyopia

Answer 19

far sighted

Question 20

focus of myopia

Answer 20

front of retina

Question 21

focus of hyperopia

Answer 21

back of retina

Question 22

Focus of astigmatism

Answer 22

front and back

Question 23

Focus of presbyopia

Answer 23

Back or behind the retina

Question 24

refractive ability of myopia

Answer 24

Strong

Question 25

refractive ability of hyperopia

Answer 25

Weak

Question 26

refractive ability of presbyopia

Answer 26

Weak

Question 27

refractive ability of astigmatism

Answer 27

None

Question 28

corrective lens of myopia

Answer 28

concave lenses

Question 29

corrective lenses of hyperopia

Answer 29

convex lenses

Question 30

corrective lenses of astigmatism

Answer 30

Cylindrical

Question 31

corrective lenses of presbyopia

Answer 31

bifocal or progressive lens

Question 32

surgical mngt of refractive errors

Answer 32

LASIK

Question 33

disease resulting to increase intraocular pressure (IOP)

Answer 33

Glaucoma

Question 34

Inadequate drainage means increase in aqueous humor therefore increasing IOP resulting to the compression of the optic nerve leading to its damage

Answer 34

Glaucoma