Extending range of vision with novel diffractive technologies

Session Details

Session Title: Pseudophakic IOLs/ Multifocals II

Session Date/Time: Tuesday 16/09/2014 | 08:00-10:30

Paper Time: 10:06

Venue: Boulevard A

First Author: : H.Weeber THE NETHERLANDS

Co Author(s): :    K. Waltz   P. Piers           

Abstract Details

Purpose:

To describe a new innovative intraocular lens design that is designed to provide a continuous range of high-quality vision.

Setting:

AMO Groningen, Netherlands

Methods:

A variety of existing and new intraocular lens (IOL) technologies were assessed using computer simulations and lab measurements. Combinations of refractive and diffractive technologies were included. The resulting technology is described. IOLs were produced and tested in physical model eyes and computer ray tracing.

Results:

The new IOL design merges three optical technologies: (1) correction of spherical aberration (2) correction of chromatic aberration using a monofocal diffractive technology for enhancing the contrast in the far focus, and (3) distribution of light over a range of distances using optimized diffractive echelette technology. IOL measurements show high quality images over a range of distances. Imaging quality at intermediate distances was better than that of reference monofocal and multifocal designs. The modulation transfer function (MTF) at far focus was maintained at the level of that of monofocal spherical and aspheric IOLs. Computer simulations confirmed a visual acuity equal or better than 0.0 logMAR over a range of 1.75 diopters. Contrast vision was constant (<1% change) over a range of 1.5 diopters.

Conclusions:

The combination of new and existing diffractive and refractive technologies result in an IOL design with unique optical properties, suggesting that the optical design may provide an extended range of vision, without sacrificing visual quality at distance. Simulated visual acuity stays within one line (0.1 logMAR) from its peak over a range of 2 diopters.

Financial Interest:

One or more of the authors... is employed by a forNONEprofit company with an interest in the subject of the presentation, One or more of the authors... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented