Michael C Brodsky1, Michael H Gräf, Guntram Kommerell. 1. Departments of Ophthalmology and Pediatrics, University of Arkansas for Medical Sciences, Arkansas Children's Hospital, 800 Marshall, Little Rock, AR 72202, USA. brodskymichaelc@uams.edu
Abstract
BACKGROUND: Dissociated horizontal deviation is one of several conditions that manifest unequal horizontal deviations depending on which of the 2 eyes is fixating. PURPOSE: To describe the reversed fixation test as an essential tool to establish the diagnosis of dissociated horizontal deviation. METHODS: Analysis of 4 case scenarios depicting the utility of the reversed fixation test. RESULTS: The reversed fixation test distinguishes dissociated horizontal deviation from an unequal exodeviation of the 2 eyes resulting from postoperative slippage or weakness of a horizontal rectus muscle. CONCLUSION: The reversed fixation test is necessary to establish the diagnosis of dissociated horizontal deviation.
BACKGROUND: Dissociated horizontal deviation is one of several conditions that manifest unequal horizontal deviations depending on which of the 2 eyes is fixating. PURPOSE: To describe the reversed fixation test as an essential tool to establish the diagnosis of dissociated horizontal deviation. METHODS: Analysis of 4 case scenarios depicting the utility of the reversed fixation test. RESULTS: The reversed fixation test distinguishes dissociated horizontal deviation from an unequal exodeviation of the 2 eyes resulting from postoperative slippage or weakness of a horizontal rectus muscle. CONCLUSION: The reversed fixation test is necessary to establish the diagnosis of dissociated horizontal deviation.