Assessment of Accommodation (M1)

Question 1

What flipper power and test distance should be used for the binocular accommodative facility for children 8 to 12?

Answer 1

+/-2.00 at 40cm

Question 2

What is the Hofstetter’s formula for expected average amplitude of accommodation? 1. Minimum? 2

Answer 2

1. 18.5 - 0.3*age (+/-2D)

2. 15 - 0.15*age (+/-2D)

Question 3

What is being assessed for plus lenses during binocular facility testing?

Answer 3

1. accom relaxation

2. positive fusional vergence

Question 4

Is the minus lens stimulated amp of accom increasing o r decreasing with age? 1. Sigmoidal or straight line? 2

Answer 4

1. decreasing

2. sigmoidal

Question 5

What is the expected value for binocular accommodative facility testing for ages 8 to 12 (including std dev)?

Answer 5

5.0 cpm (+/-2.5 cpm)

Question 6

What flipper power and test distance should be used for the binocular accommodative facility for patients 13 to 30?

Answer 6

amplitude scaled power and test distance for binocular testing

Question 7

What are some of the reasons that less plus is found on assessment of accom response?

Answer 7

1. accommodative excess

2. high XP and poor positive (BO) fusion range

Question 8

What is the interpretation if binocular facility is reduced and monocular is normal?

Answer 8

fusional vergence dysfunction

Question 9

What is the expected value for binocular accommodative facility testing for ages 13 to 30 (including std dev)?

Answer 9

10.0 cpm (+/-5.0 cpm)

Question 10

How long should the lenses be in front of the eye during MEM testing for the assessment of accom disorders?

Answer 10

less than or equal to 0.3sec

Question 11

If a patient accommodates through -6 D at 40cm during the minus lens test, What is the amplitude of accom equal to?

Answer 11

8.5 D

Question 12

What is the problem with the R/G bar reader used as a suppression check for binocular facility?

Answer 12

R transmits 2x as well as G

Question 13

If the motion is with motion during MEM is the patient focused in front or behind the target? 1. Is that a lead or a lag? 2

Answer 13

1. behind the target

2. lag of accom or underaccom

Question 14

What are the settings of MEM for the assessment of accom disorders?

Answer 14

1. full distance correction
2. normal room illumination
3. working distance used
4. MEM

Question 15

What is the expected value for the assessment of accom disorders?

Answer 15

+0.50 D (+/- 0.25D)

Question 16

What is being assessed for minus lenses during binocular facility testing?

Answer 16

1. accom effort

2. negative fusional vergence

Question 17

What is the interpretation if binocular facility is reduced and monocular is reduced?

Answer 17

1. accommodative dysfunction

2. fusional vergence dysfunction

Question 18

What size target should be used for the push up test for the amp of accom? 1. What speed should it move? 2. Does this under or over estimate AA? 3

Answer 18

1. 20/30
2. 1 to 2 cm/sec
3. overestimates

Question 19

During the Nott testing for assessment of accom disorders if the motion is with then what does the examiner do?

Answer 19

move back to neutrality

Question 20

Are dynamic retinoscopy findings usually greater or less than push up findings for amp of accom? 2

Answer 20

greater

Question 21

Is the minus lens test for amp of accom done monocularly or binocularly? 1. Are these findings usually greater or less than push up? 2

Answer 21

1. monocular

2. less

Question 22

What are the possible tests for amplitude of accommodation?

Answer 22

1. push up test
2. push away test
3. minus lens test
4. dynamic retinoscopy

Question 23

What are the possible tests for facility of accommodation?

Answer 23

lens flippers

Question 24

If the motion is against motion during MEM is the patient focused in front or behind the target? 1. Is that a lead or a lag? 2

Answer 24

1. in front of target

2. lead of accom or overaccom

Question 25

What are the possible tests for response of accommodation?

Answer 25

1. MEM
2. Nott
3. autorefraction
4. modified Bell retinoscopy

Question 26

What is the expected value for monocular accommodative facility testing for ages 13 to 30 (including std dev)?

Answer 26

11.0 cpm (+/-5.0 cpm)

Question 27

What are some of the reasons that more plus is found on assessment of accom response?

Answer 27

1. accommodative insufficiency

2. high EP and poor negative (BI) fusion range

Question 28

What is the expected value for monocular accommodative facility testing for ages 8 to 12 (including std dev)?

Answer 28

7.0 cpm (+/-2.5 cpm)

Question 29

What are the benefits of doing lens flipper facility of accom testing over far near testing?

Answer 29

1. quantitative

2. has suppression check