Division Description Test method
Schober's test -
(Decussation circle)
This test is for
measuring
vertical/horizontal
phoria of right or
left eye by using
Red/Green filter.
1. Show Schober's test type to a patient.
2. Let a patient wear Red/Green glasses (right eye = red filter, left
eye = green filter). The patient sees « » mark in a right eye and
« » mark in a left eye on Schober's test type. The binocular
condition would be ideal, if the patient could see « » mark.
3. Judge a patient's binocular function as below, while asking him
how the type is seen.
Patient's visual
status
Fixation disparity Method
Esophoriaⓐ
Add B.O prism until being
no deviation.
Exophoriaⓑ
Add B.I prism until being
no deviation.
Right eye'sⓒ
hypophoria
Left eye's
hyperphoria
Add B.U in a right eye or
B.D in a left eye until
being no deviation.
Right eye'sⓓ
hyperphoria
Left eye's
hypophoria
Add B.U in a left eye or
B.D prism in a right eye
until being no deviation.
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