Accommodative Posture

Question 1

tests for accommodative tests

Answer 1

FCC and MEM

Question 2

accommodative posture

Answer 2

accuracy of accommodative system

Question 3

lead

Answer 3

over-accommodation

Question 4

lag

Answer 4

under- accommodation

Question 5

Normal accommodative posture

Answer 5

+0.50 lag

Question 6

why accommodative posture is a lag?

Answer 6

under-accommodation requires less effort to see clear target due to DEPTH of FOCUS

Question 7

MEM

Answer 7

monocular estimation method

Question 8

MEM set up

Answer 8

pt’s habitual correction, bright illumination, @ harmon’s distance

Question 9

MEM targe

Answer 9

challenging reading target, but still readable

Question 10

harmon distance

Answer 10

distance from middle knuck to elbow

Question 11

MEM expected values

Answer 11

pl to +0.75D

Question 12

why dim illumination is used in FCC?

Answer 12

decreased depth of focus

Question 13

depth of field

Answer 13

range of points (object positions) at which the object can be located and still be seen clearly

Question 14

depth of focus

Answer 14

range of image positions that result in a clear retinal image

Question 15

pupil size and depth of field/focus relationship

Answer 15

smaller pupil = increased depth

larger pupil = decreased depth

Question 16

starting point of FCC

Answer 16

vertical lines bolder

usually +1.00 non-presbyopes, +3.00 presbyopes

Question 17

expected FCC values

Answer 17

plano to +1.00 D