Correlation Between Stereopsis and Reverse Stereopsis: "Turn Upside-Down the Stereo" (.pdf)

Stereopsis is a binocular phenomenon dependent on higher order visual processing. We previously reported that although stereopsis can reliably suggest a range of visual acuity (VA) in patients with no history of strabismus, it cannot be used to establish a given VA. Michael Brodsky, M.D. suggested that reverse stereovision testing in patients with bitemporal hemianopias demonstrates absence of stereopsis. The goal of this study was to compare the results of stereopsis and reverse stereopsis in patients without visual field (VF) defects before testing Dr. Brodsky's hypothesis.