Posters

In vitro optical quality evaluation of diffractive IOLs using a chromatic kit

Poster Details

First Author: J.Esteve-Taboada SPAIN

Co Author(s):    S. García-Lázaro   T. Ferrer-Blasco   M. Diez-Ajenjo   A. Dominguez-Vicent           

Abstract Details

Purpose:

To assess the in-vitro optical quality of diffractive intraocular lenses (IOLs) as a function of the wavelength and aperture.

Setting:

University of Valencia, Spain.

Methods:

The in-vitro optical quality of each lens was assessed with the PMTF (Lambda-X, Belgium), which is designed to measure the modulation transfer function (MTF) at 480 nm (blue light), 550 nm (green light), and 650 nm (red light). The optical quality of each lens was described in terms of MTF at the best lens foci, and through focus MTF at 3.0 and 4.5 mm apertures. This latter metric was measured from +0.50 to –4.00 D, where 0.0 D corresponds to the best distance-vision focus.

Results:

All in all, the optical quality of each lens varied with the aperture and wavelength. Due to the IOL design, the MTF corresponding to distance-vision focus improved when the aperture was set at 4.5 mm, meanwhile the near-vision focus one worsened. On the other hand, the through focus showed two main peaks corresponding to distance- and near-vision foci, which height peaks varied with the aperture and its position did with the wavelength.

Conclusions:

The outcomes of this study report that the optical quality varies with the aperture and wavelength. As a results, not only should the optical quality be assed with the aperture, but also with different wavelengths because this might give a deeper insight of the IOL’s performance.

Financial Disclosure:

NONE