Visual Benefit of Correcting Higher Order Aberrations in Keratoconus With Customized Scleral Lens

6 7 8 9 10 11 12 13 14 • Eleven keratoconic (KC) patients (13 eyes) and one normal eye were recruited in this study. • Conventional scleral lenses were fitted to individual eyes and aberration measurements were performed on each eye with the scleral lens on using a Shack-Hartmann wavefront sensor. • The aberration was calculated for the subject’s maximum natural pupil size under the mesopic illumination condition. From the measured aberration, the polychromatic modulation transfer functions (MTFs) were calculated to estimate expected improvements in retinal image quality by customizing the scleral lens. • Theoretical visual benefit was defined as the ratio of area under the MTFs with customized scleral lens to with the conventional scleral lens. Visual Benefit of Correcting Higher Order Aberrations in Keratoconus With Customized Scleral Lens