Diplopia (F) Flashcards Preview

III. Ocular Neurology > Diplopia (F) > Flashcards

Flashcards in Diplopia (F) Deck (15)
Loading flashcards...
1
Q

What is the awareness of seeing the same object in two different locations in visual space called?

A

diplopia

2
Q

What are the tests for sensory fusion?

A
  1. Worth 4 Dot

2. stereoacuity

3
Q

What is the way to properly record a patient with a constant vertical deviation with exotropia?

A

CRXT with CRHypertropia

4
Q

What is the amount of movement in degrees possible in abduction? 1. Adduction? 2. Infraduction? 3. Supraduction? 4

A
  1. 50deg
  2. 50deg
  3. 45deg
  4. 40deg (decreases with age)
5
Q

What is the status of comitancy that has a magnitude of deviation that stays the same in different positions of gaze? 1. What are examples of when this would occur? 2

A
  1. comitant

2. childhood strabismus

6
Q

What are the possible management options for diplopia?

A
  1. imaging and referral for underlying pathology
  2. Fresnel prisms
  3. patching
  4. Bangerter foils
  5. ground in prism
  6. strabismus surgery
  7. botox
  8. orthoptic therapy
7
Q

What are signs of restrictive disease due to trauma? 1. What is the treatment? 2

A
  1. lid edema, hematomas

2. monitor 6 months, surgery

8
Q

What are the potential clinical testing methods for diplopia?

A
  1. Maddox rod
  2. red lens/Hess Lancaster test of comitancy
  3. double Maddox rod
  4. forced duction test
  5. ocular health check
  6. confrontations/VF test
  7. fusion testing
  8. other cranial nerve testing
  9. saccadic/pursuit evaluation
9
Q

What is the status of comitancy that has a magnitude of deviation that changes in different positions of gaze? 1. What are examples of when this would occur? 2

A
  1. incomitant

2. cranial nerve palsies, restrictive disease, myasthenia gravis

10
Q

What are the tests for retinal correspondence?

A
  1. synoptophore/troposcope/major amblyoscope

2. Bagolini lenses

11
Q

What are the steps to Parks procedure?

A
  1. Which eye is hyper eye in primary gaze?
  2. Hyper greater in left or right gaze?
  3. hyper greater in left or right head tilt?
12
Q

What are the possible indicators of cranial nerve V involvement? 1. CN VII? 2. CN VIII? 3

A
  1. check facial sensation
  2. check facial movement
  3. check for hearing loss
13
Q

What are the steps in the red lens test?

A
  1. how many lights?
  2. location of red light relative to white light?
  3. look at light in all positions of gaze
  4. determine area of greatest separation
  5. paretic/involved eye will see image farther away
14
Q

What is the angle in which the involved eye fixates/prisms over the sound eye?

A

secondary angle

15
Q

What is the angle in which the sound eye fixates/prisms over the involved eye?

A

primary angle