Health Entrance Vocab

Question 0

strabismus

Answer 0

Eye turn; improper alignment of eyes

Question 1

Leukocoria

Answer 1

White pupil, indicating serious ocular issues such as cancer

Question 2

Hyperopia

Answer 2

Image focused behind retina; farsighted; cannot see objects close up

Question 3

Myopia

Answer 3

Image is formed in front of retina; near sited; cannot see objects far away

Question 4

Astigmatism

Answer 4

Decreased VA due to irregular shape of cornea, needs toric lenses to correct

Question 5

Anisometropia

Answer 5

Each eye having different refractive power

Question 6

Amblyopia

Answer 6

loss or lack of development of central vision in one eye. 3 different types

1. Refractive
2. Strabismic
3. Deprivation

Question 7

Peak wavelength of short-wavelength opsin

Answer 7

430 nm

Question 8

Peak wavelength of middle wavelength opsin

Answer 8

535 nm

Question 9

Peak wavelength of long-wavelength opsin

Answer 9

565 nm

Question 10

Trichromacy

Answer 10

Patient has the 3 types of photopigments

Question 11

Anomalous trichromat

Answer 11

One of three opsins has abnormal spectral functioning

Question 12

Name the three types of anomalous trichromats

Answer 12

Protanomalous trichromat
Deuteranomalous trichromat
Tritanomalous trichromat

Question 13

Protanomaly/protanomalous trichromat

Answer 13

L cones altered, poor red-green hue discrimination

Question 14

Deuteranomaly/deuteranomalous trichromat

Answer 14

M cones altered; mildly affects red/green, **most common 5% males

Question 15

Tritanomaly/tritanomalous trichromat

Answer 15

S cones altered, affects blue/yellow, rare

Question 16

Are trichromats color blind?

Answer 16

No, not technically. They are “anomalous” (i.e. anomalous trichromat). They perceive colors differently than the norm.

Question 17

Dichromat

Answer 17

Patient only has 2 types of photopigments functioning; 3rd is either missing or nonfunctional

Question 18

Name the three types of dichromats

Answer 18

Protanope
Deutenarope
Tritanope

Question 19

Protanope

Answer 19

Complete absence of L cones, severe color deficiency, unable to sense red in visual spectrum

Question 20

Deutenarope

Answer 20

Complete absence of M cones, moderately affects red/green discrimination

Question 21

Tritanope

Answer 21

Complete absence of s cones, very rare

Question 22

Monochromacy

Answer 22

2 of 3 types of cones missing, total color blindness