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Depth of focus in two trifocal intraocular lenses

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Session Details

Session Title: Pseudophakic IOLs/ Multifocals II

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

Paper Time: 09:04

Venue: Boulevard A

First Author: : S.Pieh AUSTRIA

Co Author(s): :    H. Umesh Babu   W. Stork           

Abstract Details


Comparison of depth in two trifocal intraocular lenses using an optical bench and defocus curves.


Medical University Vienna


The AT LISA tri (Carl Zeiss Meditec) and Finevision (PhysIOL) lens types were examined. An optical bench with a spherical aberration of 0,26 µm of the cornea, a pupil diameter of 4,7 mm was used to determine the „Trough Focus Response“ curves. Furthermore the defocus curves with best distance correction from 0 D to 3,5 D in 0,25 D increments have been evaluated in 15 patients with an AT LISA tri in one eye and a Finevision in the other eye.


The „Trough Focus Response“ curves reveals three strictly separated focal poinst for the AT Lisa tri whereas the Finvision shows a broad distance focal point a near focal point of lower light intensity. The defocus corves will be presented in overlapping diagrams.


The AT LISA tri (Carl Zeiss Meditec) divides the incident light in two 3 well separated focal points. The Finevision (PhysIOL) creates a broad distance focus and a separated near focus.

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