Characterizing the Wave Aberration in Eyes with Keratoconus or Penetrating Keratoplasty Using a High-Dynamic Range Wavefront Sensor

Eyes with KC and PK have higher-order aberrations that are approximately 5.5 times more than what is typical in normal eyes. Vertical coma is the dominant higher-order aberration in people with KC, whereas PK eyes are dominated by trefoil, spherical aberration, and coma. Correcting these aberrations may provide substantial improvements in vision beyond what is possible with conventional correction methods.