Vergence and Stereopsis

We have shown previously that the ability to see depth from disparity is impaired in the central visual field for individuals with known stereo deficits due to anisometropia or microstrabismus, while peripheral stereopsis was spared. As disparity drives fusional vergence responses, this project investigates whether vergence eye movements to small central targets are impacted, while vergence responses to larger targets that extend in to the periphery are spared.