Motor/Sensory Fusion Testing Flashcards

1
Q

Where do the EOM’s form from in development? When does the muscle cone form? When do the nerves from the brain go to the muscle?

A

Mesoderm
5-7 weeks of gestation
1 month

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2
Q

What EOM testing technique is not used when testing EOM’s for pediatrics?

A

Pursuits

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3
Q

How do you test EOM’s for pediatrics?

A

Have patient follow target in a pattern. May have to turn an inflants/toddlers head (Doll’s Head).

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4
Q

What is “ Doll’s Head” technique and what does it test?

A

Test for EOM. Doc moves baby’s head while the baby focuses on object.

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5
Q

What do you look for when doing motilities?

A

restrictions or overactions

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6
Q

When does convergence develop for full-term babies?

A

Convergence is able to happen at 1 month.
Not consistent until 2 months.
Not without delay until 3 months.

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7
Q

When doing near-point convergence, what do you look for when doing it on pediatric patients?

A

Record when patient reports break and recovery OR watch when the patient suppresses.

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8
Q

When is a normal break and recovery for near point of convergence?

A

5cm/7cm

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9
Q

When is an abnormal break and recovery for near point of convergence?

A

Break at 6cm or greater

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10
Q

What is the Modified Thorington test?

A

Similar to Von Grafe test.
It is a subjective measurement of binocularity. Done in free space and does not require a phoropter. Very repeatable and may be easier to understand for kids. Done at dist and near.

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11
Q

What do you need in order to perform Modified Thorington test?

A

Maddox Rod
Penlight
Thorington card

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12
Q

What eye do you usually put the maddox rod on when doing Modified Thorington tetsing?

A

Right eye

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13
Q

What will the patient see when performing Modified Thorington test?

A

A red line that passes through number line.

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14
Q

On modified thorington test, if patient sees red line on the left of 0, what would the patient be?

A

Exo “Crossed”

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15
Q

On modified thorington test, if patient sees red line on the right of 0, what would the patient be?

A

Eso “uncrossed”

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16
Q

On modified thorington test, if patient sees red line above 0, what would the patient be?

A

R Hypo

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17
Q

On modified thorington test, if patient sees red line above 0, what would the patient be?

A

R Hyper

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18
Q

What are normal values for Von Graefe and Modified Thorington?

A

Distance: 1 exo
Near: 3 exo
Vertical: 0 iso

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19
Q

Tests of Motor Fusion (6)

A

1) Hirschberg
2) Krimsky
3) Bruckner
4) Cover Test/ Unilateral/alternative
5) Near point of convergence
6) VG/MT Phoria

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20
Q

Hirschberg Test
Distance:
Procedure:
Results:
Ideal outcome

A

Distance: 50 cm
Procedure: Transilluminator
Results: look at displacement of reflex
If 1 mm displacement, equals 22 prism diopters?

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21
Q

Krimsky
Distance:
Procedure:
Results:
Ideal outcome

A

Distance: 50 cm
Procedure: Transilluminator with prism
Results: When reflex is symmetrical

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22
Q

Bruckner
Distance:
Procedure:
Results:
Ideal outcome

A

Distance: 1 meter
Procedure: Direct Ophthalmoscope
Results: Displacement of reflex, color of media
-Includes Hirschberg

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23
Q

Cover Test/unilateral/ alternate
Distance:
Procedure:
Results:
Ideal outcome

A

Distance: 16’’, 10’ , 20’
Procedure: UCT then ACT Multiple fields of gaze
Results: phoria vs tropia
Ideal outcome: 0-3XP 0-6XP’

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24
Q

Near Point convergence
Distance:
Procedure:
Results:
Ideal outcome

A

Distance:Target from 16 inches to the nose
Procedure: Keep target clear, tell me when double
Results: Record break/recovery or when you see supression
Ideal outcome: 5-7cm

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25
Q

VG/MT Phoria
Distance:
Procedure:
Results:
Ideal outcome

A

Distance: 16’’ or 20’
Procedure: Align Risley prism;
Maddox Rod with card & transilluminator
Results: Aligned vertical/horizontal; Line going through number
Ideal outcome: 1 exo distance
3 exo near
0 iso

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26
Q

How do you do “step vergences”? What do you tell the patient? How do you get results?

A

Use prism bar.
“Tell me when the target gets double and then single”
Results by observing objective eye movements

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27
Q

How do you do “smooth/risley prism vergences”? What do you tell the patient? How do you get results?

A

In phoropter.
Tell me when target gets blurry, double, and then single”

28
Q

Is randot test local or global stereopsis? By what age can the person detect randot?

A

Global
By 6 months of age

29
Q

If patient does not get shapes in randot testing, what does this mean?

A

Patient does not have global stereopsis and is supressing

30
Q

Does global stereopsis have monocular cues?

A

No

31
Q

What are examples of tests that examine local stereopsis? (5)

A

Titmus fly
Wirt circles
Wirt animals
R+L in random
FBAT

32
Q

Do monocular cues exist in local stereopsis?

A

yes

33
Q

What does the FBAT test? What does child need to wear?

A

Stereopsis for infants
Wear red/green glasses
Child should see in 3D. May reach for the objects popping out in the book.

34
Q

What does the PASS/Smile test? What does child need to wear? What are normal age ranges this test should be performed?

A

Assesses stereopsis.
Child wears polarized glasses.
Normal age ranges from 6-17 months.
Usual distance at 40 cm but can adjust distances to make it harder.

35
Q

What does the Random Dot E test? How many cards does it come with? What distances can this be tested at?

A

Stereopsis
3 cards
50 cm, 1 m, 1.5 m

36
Q

At 1 meter for the Random Dot E, how many seconds of arc would this be?

A

252 sec

36
Q

At 1 meter for the Random Dot E, how many seconds of arc would this be?

A

252 sec

37
Q

What stereopsis test that does not require polarized glasses? What pictures are on this testing card?

A

Lang Stereo Test
Car, cat, star

38
Q

What seconds of arc do the 3 books for Random Preschool test measure?

A

1) 800-400 sec arc
2) 200-100 sec arc
3) 60-40 sec arc

38
Q

What seconds of arc do the 3 books for Random Preschool test measure?

A

1) 800-400 sec arc
2) 200-100 sec arc
3) 60-40 sec arc

39
Q

In normal randot, what does the top section of shapes measure? How many seconds of arc?

A

Global stereo
500 sec

40
Q

In normal randot, what does the bottom section of shapes measure? How many seconds of arc?

A

Global stereo
250 seconds of arc

41
Q

In normal randot, what do the wire circles test? How many seconds of arc?

A

Local stereo
400-20 sec

42
Q

In normal randot, what do the animals test? How many seconds of arc?

A

Local stereo
400,200,100 sec

43
Q

In litmus fly stereo, how many seconds does that measure?

A

3000 sec

44
Q

In stereo butterfly, how many seconds does that measure?

A

1200-2500 seconds

45
Q

Is the flashlight 4-dot test, sensory or motor fusion testing? What degree of fusion does it test? Does it help determine stereopsis?

A

Sensory fusion test
2nd degree fusion
Does not determine stereopsis.

46
Q

When doing 4 dot procedure, how do you set it up? What do you ask the patient? What does this test for?

A

Patient puts red side of the red/green glasses on the OD. Ask how many dots the patient sees.
This tests for the deepness of suppression.

47
Q

If patient sees 2 red dots on 4 dot procedure, what are the results?

A

OS suppression

48
Q

If patient sees 3 green dots on 4 dot procedure, what are the results?

A

OD suppression

49
Q

If patient sees 4 dots with no eye turn, what are the results?

A

Fusion

50
Q

If patient sees 4 dots with an eye turn, what are the results?

A

anomalous correspondence

51
Q

If patient surpasses in the dark, is that a deeper or lesser suppression?

A

deeper suppression

52
Q

If patient sees 5 dots with red on the right, what are the results?

A

Diplopic, uncrossed, eso

53
Q

What are 7 binocular tests you can perform on Infants and toddlers (non-verbals)

A

Hirschberg
Bruckner
Krimsky
NPC
Bernell
Lang
Stereo Smile

54
Q

What are 5 binocular tests you can perform on school aged children?

A

Cover test
Phoria
vergence ranges
Randot
Worth 4 dot

55
Q

What are 6 binocular tests you can perform on preschoolers?

A

Cover test
Prism bar ranges
NPC
3/4 Figure/ Worth 4
Randot/E
Lang

56
Q

At birth, what is the phoria direction of most infants?

A

Exos

57
Q

In the Sondhi experiment regarding babies ocular alignment, what percent of neonates were orthophoric?

A

48.6%

58
Q

In the Sondhi experiment regarding infant ocular alignment, what percent of infants were exophoric?

A

51.5%

59
Q

In the Sondhi experiment regarding infant ocular alignment, what percent of infants were intermittent exotropes?

A

15%

60
Q

What percent of our neurons binocular?

A

70%

60
Q

What percent of our neurons binocular?

A

70%

61
Q

How far do you hold the penlight when doing angle kappa?

A

50 cm

62
Q

What prism do you use for Krimsky?

A

Fixated eye