Accommodation

Question 1

What’s the normal AoA of a 5 year old?

Answer 1

15D

Question 2

What’s the normal AoA of a 10 year old?

Answer 2

12.5D

Question 3

What’s the normal AoA of a 20 year old?

Answer 3

9.75D

Question 4

What’s the normal AoA of a 30 year old?

Answer 4

7.25D

Question 5

What’s the normal AoA of a 40 year old?

Answer 5

4D

Question 6

What’s the normal AoA of a 50 year old?

Answer 6

2.5D

Question 7

What’s the normal AoA of a 60 year old?

Answer 7

1.25D

Question 8

What’s the normal AoA of a 70 year old?

Answer 8

0.50D

Question 9

What’s the normal AoA of a 75 year old?

Answer 9

0D

Question 10

What’s the normal near point of a 5 year old?

Answer 10

5cm

Question 11

What’s the normal near point of a 10 year old?

Answer 11

8cm

Question 12

What’s the normal near point of a 20 year old?

Answer 12

10cm

Question 13

What’s the normal near point of a 30 year old?

Answer 13

14cm

Question 14

What’s the normal near point of a 40 year old?

Answer 14

25cm

Question 15

What’s the normal near point of a 50 year old?

Answer 15

40cm

Question 16

What’s the normal near point of a 60 year old?

Answer 16

80cm

Question 17

What’s the normal near point of a 70 year old?

Answer 17

200cm

Question 18

What’s the normal near point of a 75 year old?

Answer 18

Infinity

Question 19

What is accommodative lag?

Answer 19

Using less accommodation than needed
Essentially looking ‘behind’ target so can focus further than target

Question 20

What is accommodative lead?

Answer 20

Using more accommodation than needed
Essentially looking ‘in front’ of target so can focus at a closer distance

Question 21

What is a normal accommodative lag for pre-presbyopes?

Answer 21

+0.25-+0.75D

Question 22

What could a result of +1.00D or more on dynamic ret mean?

Answer 22

Near eso (conv system compensating for insuff accomm)
Accomm dysfunction
Undercorrected hyperope
Overcorrected myope

Question 23

What could a result of +2.00D or more on dynamic ret mean?

Answer 23

Presbyopic

Question 24

What could a result of -0.25D or more on dynamic ret mean?

Answer 24

Near exophoria
Accomm spasm
Undercorrected myope
Latent hyperope