title: Binocular summation and visual function with induced anisocoria and monovision.
abstract: The advances in new techniques for correcting presbyopia, such as a small aperture combined with monovision, require an in-depth study of binocular aspects. In this work, we have studied binocular visual performance of 12 subjects after inducing different degrees of anisocoria combined with two different add powers in the non-dominant eye. We have analysed visual performance in terms of the visual-discrimination capacity (a function to evaluate the strength of bothersome halos) and the contrast-sensitivity. The results show a deterioration of the binocular vision when inducing anisocoria and with any add power, with a higher perception of halos, a lower contrast sensitivity and poorer binocular summation of these visual functions on increasing anisocoria. This deterioration is clinically acceptable in the case of low add power, since positive binocular summation is maintained in contrast sensitivity, and visual discrimination is not altered.
authors.affiliation: Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, 18071 Granada, Spain.
authors.forename: José J
authors.initials: JJ
authors.lastname: Castro
authors.affiliation: Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, 18071 Granada, Spain.
authors.forename: Margarita
authors.initials: M
authors.lastname: Soler
authors.affiliation: Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, 18071 Granada, Spain.
authors.forename: Carolina
authors.initials: C
authors.lastname: Ortiz
authors.affiliation: Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, 18071 Granada, Spain.
authors.forename: José R
authors.initials: JR
authors.lastname: Jiménez
authors.affiliation: Laboratory of Vision Sciences and Applications, Department of Optics, University of Granada, 18071 Granada, Spain.
authors.forename: Rosario G
authors.initials: RG
authors.lastname: Anera
keywords: (330.0330) Vision, color, and visual optics; (330.1400) Vision - binocular and stereopsis; (330.1800) Vision - contrast sensitivity; (330.4595) Optical effects on vision; (330.6100) Spatial discrimination