Lect 14 functional vision loss Kurtz Flashcards Preview

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Flashcards in Lect 14 functional vision loss Kurtz Deck (12)
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1
Q

Describe functional vision loss

A

When the pt sees nothing and the doctor sees nothing

2
Q

What do you call vision loss that is not due to tissue damage?

A

non-organic visual disorder

3
Q

What are the 2 main categories of functional vision loss?

A

1) Malingering

2) Hysteria

4
Q

(T/F) Hysteria is more common in males

A

false, more common in females

5
Q

Which type of functional vision loss is associated with a death in the family, unemployment, divorce, or other major stressor?

A

hysteria

6
Q

Which type of functional vision loss is associated with someone who is lying?

A

malingering

7
Q

Name 5 good tests to perform for monocular functional vision loss

A

paired cylinder test, interruption of vision with a strong plus lens, prism dissociation, american optical malingering test, the reading bar test

8
Q

What are the 3 tests to perform for suspected hysteria?

A

potential acuity meter (PAM), prolonged/delayed refraction, tangent screen

9
Q

(T/F) If a pt is malingering, a corkscrew pattern tangent screen is unlikely

A

false, it is likely

10
Q

(T/F) In regards to tangent screen, the pts visual field should double in size if they move back twice as far?

A

true

11
Q

Which one of the following is NOT a disease that may masquerade as FVL?

a) optic nerve disease (distinguish FVL from ON disease using pupils)
b) early keratoconus
c) morning glory syndrome
d) mild amblyopia
e) early stargardts disease
f) central serous chotioretinopathy

A

c) morning glory syndrome

12
Q

What is useful only for severe degree of vision loss?

A

OKN