(inward deviation) and exophoric (outward deviation) eye posture was determined using the Howell card at distance and near.
devations, negative fusional amplitudes are exercised and increased by using base in prisms.
So, to encourage someone to view this esophoric
film would only be an act for curiosity's sake.
deviations, base out prism is introduced in front of one eye, increasing until the nonius markers on the Mallet unit line up (use base in prism for exophoric deviations and base up for hyperphoric deviations).
Of the remaining 190 patients, cover test revealed 86% to be orthophoric, 13% to be exophoric and only 1% were esophoric
For example, some patients may be orthophoric at their reading distance (eg, 40cm), or even esophoric
, and yet not be able to converge to 10cm.