Optical Quality After Implantation of a Spherical or Aspherical Intraocular Lens in Hypermetropic Patients

Optical Quality After Implantation of a Spherical or Aspherical Intraocular Lens in Hypermetropic Patients: A Randomized Clinical Trial

The purpose of this study is to evaluate differences in the depth of focus after implantation of a spherical or aspheric IOL in hypermetropic and emmetropic patients. After implantation of a spherical IOL hypermetropic patients may achieve a better depth of focus compared to emmetropic patients due to a larger amount of spherical aberrations.

Inclusion Criteria:

• Cataract
• Dioptric power of IOL >22.0 D in hypermetropic patients and 18.0-22.0 D in emmetropic patients, respectively

Exclusion Criteria:

• Uveitis, pathology of the retina or the optic nerve
• Corneal scarring or irregularities
• Astigmatism >1.5 D
• Amblyopia
• Perioperative complications
• Postoperative refractive error >2.0 D of spherical equivalent
• Postoperative DCVA <0.8 (ETDRS)