When a person has strabismus, the pd procedure is:
Occlude one eye.
Take monocular pd on other eye.
Occlude next eye.
Take monocular pd on other eye.
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I'm troubleshooting. I have a patient with strabismus who was not occluded when her pd was taken. When I took her pd (using the method above), her pd added up to the same number but was off by 1mm on both sides.
PS She can't see out of the glasses we made for her using the non-occluded pd.
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