Posters

Optical power distribution on spherical monofocal intraocular lenses

Poster Details

First Author: G.Zoulinakis SPAIN

Co Author(s):    E. Papadatou   A. Moulakaki   T. Ferrer-Blasco              

Abstract Details

Purpose:

To compare spherical monofocal intraocular lenses with different optical power distribution between the anterior and posterior surfaces and to examine which is the best power distribution in terms of optical quality.

Setting:

University of Valencia – Optics Faculty, Burjassot, Valencia, Spain.

Methods:

The monofocal intraocular lenses were designed with Zemax-EE Optical Design Program. The total optical powers of the lenses were -10, 10, 20, 30 and 40 diopters. The power distribution of the anterior and posterior surfaces changed respectively between 0, 25, 50, 75 and 100 % of the total optical power. The eye model that was used is the Navarro which was optimized with Zemax to have the least root mean square (RMS) error in every different situation of power distribution.

Results:

We obtained Zernike coefficients for the aberrations, especially the sphere, spherical aberration and secondary spherical aberration. We also obtained results for the total RMS error, the RMS radius, the geometric radius of the point spread function at the retinal plane and Airy disk diameter. The greater differences were observed at the 30 and 40 D lens. In these lenses the RMS radius had a difference of 15 μm while the spherical aberration and the total RMS error a difference of 110 nm between different power distributions. The differences were less for lenses with smaller total power.

Conclusions:

Our results show that a percentage between 70 % and 90 % of the total power of an intraocular lens with spherical surfaces has to be distributed on the anterior surface of the lens.

Financial Disclosure:

NONE