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Refractive lens exchange with a trifocal diffractive aspheric intraocular lens

Session Details

Session Title: Intraocular correction of presbyopia : multifocal IOLs, Monovision

Session Date/Time: Tuesday 08/10/2013 | 14:00-16:00

Paper Time: 15:14

Venue: Elicium 1 (First Floor)

First Author: : T.Monteiro PORTUGAL

Co Author(s): :    N. Franqueira   R. Dourado Leite   F. Vaz        

Abstract Details


To assess efficacy, safety and predictability after refractive lens exchange (RLE) with bilateral implantation of a diffractive trifocal intraocular lens (IOL) AT LISA tri 839MP (Carl Zeiss Meditec), with +3,33 D near add and +1,66 D intermediate add.


Hospital CUF Porto - Hospital de Braga


100 eyes of 50 patients were examined after RLE with implantation of a trifocal IOL for the correction of presbyopia, the AT LISA tri 839MP IOL. Uncorrected and corrected near, intermediate and distance visual acuity, contrast sensitivity (Pelli-Robson test), reading performance test (MNread) were evaluated postoperatively after a 3 month follow-up study.


100 eyes of 50 patients, mean age 54 years old, submitted to clear lens extraction and AT LISA tri 839MP preloaded IOL implantation for the correction of presbyopia. Post-operative monocular uncorrected visual acuity (snellen decimal) was 0,81 (± 0,09) for near (40 cm), 0,91 (± 0,08) for intermediate (80-90 cm) and 0,95 (±0,04) for far. All patients had mean spherical equivalent < 0,75 D after follow-up. Contrast sensitivity values were similar to a standard monofocal IOL and superior to a bifocal diffractive apodized IOL but not statistically significant. Maximum reading speed was higher in the trifocal group compared with monofocal group with +3,00 add (statistically significant), reading acuity and critical font size were similar between groups. Less than 20% of patients report halos/glare transitory during the first 3 months.


Bilateral implantation of the AT LISA tri 839 MP IOL provides excellent functional vision at all distances, and is an effective procedure for correcting presbyopia after clear lens extraction.

Financial Interest:


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