Affordable Access

Publisher Website

Effect of Intraocular Lens Asphericity on Quality of Vision after Cataract Removal:An Intraindividual Comparison

Publication Date
DOI: 10.1016/j.ophtha.2009.03.052
  • Medicine


Purpose To determine the effect of intraocular lens (IOL) asphericity on quality of vision after cataract removal. Design Intraindividual, prospective, randomized clinical trial. Participants Twenty-six cataract patients received 2, one-piece, blue-light–filtering hydrophobic acrylic IOLs each. Methods One eye was implanted with a spherical (SN60AT, Alcon) and the contralateral eye with an aspheric (SN60WF, Alcon) IOL with −0.2 μm spherical aberration (SA). All trial-specific measurements (corneal topography, wavefront sensing, high-contrast visual acuity [HCVA], contrast sensitivity [CS]) were performed 6 months after surgery. A paired Student t-test or Wilcoxon test was used to check intergroup differences. Main Outcome Measures Absolute values and intraindividual differences (Δ i) of corneal and ocular higher order aberrations and best-corrected visual Strehl ratio based on the optical transfer function (BCVSOTF) values for virtual pupil diameters of 3, 4, 5, and 6 mm were computed. Photopic and mesopic HCVA, photopic, and high-mesopic CS as well as high-mesopic disability glare (DG) were measured using the Frankfurt-Freiburg Contrast and Acuity Test System. Results No intergroup difference of demographic data, pupillometry, and corneal aberrations were observed. Coma and trefoil root mean square and SA were significantly lower in the aspheric group resulting in higher BCVSOTF, mesopic HCVA, and photopic and high mesopic CS. All Δ i values with exception of photopic HCVA and DG indicated significantly better performance of the aspheric IOL. Conclusions An aspheric IOL with −0.2 μm SA provide higher quality of vision than spherical IOL in terms of retinal image quality, mesopic HCVA and CS. Financial Disclosure(s) Proprietary or commercial disclosures may be found after the references.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

Measurement of corneal aberrations for customisati...

on The British journal of ophthal... April 2010

Quality of vision in patients implanted with asphe...

on Indian journal of ophthalmolog... April 2014

Quality of vision after cataract surgery after Tec...

on Journal of cataract and refrac... February 2007

Quality of vision after cataract surgery after Tec...

on Journal of Cataract & Refracti... Jan 01, 2007
More articles like this..