Station seven
(allowed 5 minutes)
a. Calculate the AC/A ratio (accommodative convergence / 
    accommodation ratio) using the gradient method and the 
    following values (taken from an emmetropic patient):
    Alternating cover test 
for distance (6 metre)       = 10 dioptre esophoria
for distance with -3.00DS = 25 dioptre esophoria
b. A 6 year-old boy with 25 prism dioptres esotropia has a 
    + 4.00 DS cycloplegic refraction. He has a AC/A ratio of 6.
    What is the result of prescribing hypermetropic glasses?



Go to station 8
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