Refraction and aberration across the horizontal central 10 degrees of the visual field.

Purpose: The purpose of this study was to measure refraction and aberrations across the horizontal central visual field.

Methods: Cycloplegic refraction was measured on eight subjects at 13 points across the horizontal central 10 degrees of the retina using a Hartmann-Shack wavefront sensor. Refractions were converted into mean sphere (M), 90 degrees to 180 degrees astigmatism (J180), and 45 degrees to 135 degrees astigmatism (J45) components.