"Polarized glasses dissociation test" for detection of suppression in intermittent exotropia.

Abstract

Detecting suppression is important for monitoring change in and determining surgical timing for intermittent exotropia. Here, we evaluate the results of a prospective, cross-sectional study of the "polarized glasses dissociation test" for detection of suppression. A positive result was defined as constant deviation of one eye at 6 m when viewing at distance with polarized glasses. The sensitivity of the test for suppression as assessed using a vectograph was 100%, specificity 95%, positive predictive value 97% and negative predictive value 100%. Due to its simplicity and accuracy, the polarized glasses dissociation test could be an alternative to other suppression tests and can be applied to a wide range of age groups.