Color Vision Flashcards Preview

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Flashcards in Color Vision Deck (15):
1

what type of defect is congenital

boys, red/green and always bilateral

2

what type of defect is acquired

blue/yellow, males and females, and unilateral or bilateral

3

when do you test for color defects in clinic

every patient, annually, unilaterally

4

what are 5 causes of acquired color defects

cataracts, glaucoma ,diabetes, stroke, and optic nerve diseases (MS or brain tumors)

5

how far away do you hold the HRR plates

30 inches/ 76 cm

6

how fast should you turn pages 5-10

every 3 seconds

7

how do you record if plates 5-10 were correct in right eye

OD 6/6 HRR

8

what plates do you go to if 5 or 6 is wrong

plates 21-24

9

what plates do you go to if plates 7-10 were wrong

plates 11-20

10

what type of defect is present if plates 5 or 6 were wrong

blue-yellow

11

what type of defect is present if plates 7-10 were wrong

red-green

12

how do you diagnose which type of defect is present

the type that has the most correct

13

what happens if you get scattered answers

the patient is malingering

14

what are the 2 names for blue-yellow defect

Tritan (blue weak) and Tetartan (yellow weak)

15

what are the 2 names for the red-green defect

Protan (red weak) and Deutan (green weak)