Ocular Aberrations and Contrast Sensitivity in Eyes Implanted with Aspheric and Spherical Intraocular Lenses

Purpose: To compare spherical aberration, higher-order aberration, and contrast sensitivity of eyes implanted with aspheric (AcrySof IQ) or spherical (AcrySof Natural) intraocular lenses. Method: Seventy-five eyes implanted with posterior chamber intraocular lenses were divided into two groups: AcrySof IQ (35 eyes) and AcrySof Natural (40 eyes). Wavefront analysis (spherical, higher-order and total aberration) using iTace, and contrast sensitivity (under photopic and mesopic condition) using Optec 6500 were performed at 1 month and 3 months postoperatively. Result: One month after surgery, the IQ IOL (intraocular lens) group had lower values of spherical aberration (p