Deficient vergence prism adaptation in subjects with decompensated heterophoria.

ABSTRACT: Vergence prism adaptability was evaluated in subjects with high symptomatic and asymptomatic heterophoria and compared to individuals with a heterophoria within normal range (the control group). A computer haploscope was used to measure phoria values and changes in the eye position after introducing 6 prism diopters base out in front of the right eye. Phoria values were measured with a nonius paradigm every minute for a period of 10 minutes during adaptation. The results showed that subjects with symptomatic heterophoria are characterized by a lower rate of prism adaptation and adapted to a smaller extent with respect to the control group. The group with high but asymptomatic heterophoria showed prolonged adaptation time but after several minutes of binocular viewing the subjects were able

SUBMITTER: Przekoracka-Krawczyk A 

PROVIDER: S-EPMC6338415 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature