Binocular visual performance after LASIK.
OBJECTIVE
To analyze binocular visual function after LASIK.


METHODS
Eye aberrometry and corneal topography was obtained for both eyes in 68 patients (136 eyes). To evaluate visual performance, monocular and binocular contrast sensitivity function and disturbance index for quantifying halos were measured. Tests were performed under mesopic conditions.


RESULTS
Binocular summation and disturbance index diminished significantly (P<.0001) after LASIK with increasing interocular differences in corneal and eye aberrations. Binocular visual deterioration was greater than monocular deterioration for contrast sensitivity function and disturbance index.


CONCLUSIONS
Binocular function deteriorates more than monocular function after LASIK. This deterioration increases as the interocular differences in aberrations and corneal shape increase. Improvements in ablation algorithms should minimize these interocular differences.
Jiménez
José Ramón
JR
Laboratorio de Ciencias de la Visión y Aplicaciones, Departamento de Optica, Facultad de Ciencias, Universidad de Granada, Granada, Spain. jrjimene@ugr.es
Villa
Cesar
C
Anera
Rosario González
RG
Gutiérrez
Ramón
R
del Barco
Luis Jiménez
LJ
D000328:Adult; D015350:Contrast Sensitivity / Q000502:physiology; D003315:Cornea / Q000503:physiopathology* / Q000601:surgery; D019781:Corneal Topography; D003623:Dark Adaptation; D006801:Humans; D020731:Keratomileusis, Laser In Situ; D009216:Myopia / Q000503:physiopathology / Q000601:surgery; D011184:Postoperative Period; D015348:Vision, Binocular / Q000502:physiology*