Clinical and optical evaluation of a new trifocal toric IOL

Session Details

Session Title: Pseudophakic IOLs Toric

Session Date/Time: Sunday 06/09/2015 | 16:30-18:30

Paper Time: 16:30

Venue: Room 16

First Author: : R.Bellucci ITALY

Co Author(s): :    A. Panico                    

Abstract Details

Purpose:

To demonstrate that the addition of toricity to a trifocal IOL is not detrimental to the distance, near and intermediate visual acuity and to the ocular aberration.

Setting:

University Hospital, Verona, Italy

Methods:

This study consists in a non-randomised controlled trial evaluating the maintenance of visual acuities of a new trifocal toric IOL with respect to the non-toric parent one. Two groups of 11 patients were bilaterally implanted with a trifocal (group 1) or a trifocal toric IOLs (group 2) depending of their corneal topography. The two IOLs consist on the exact same design except a toric cylinder added on the posterior surface of the trifocal toric IOL. The monocular visual acuities at far, intermediate and near were first assessed. The refraction, contrast sensitivity, binocular defocused curve, and optical aberration were also measured.

Results:

Preoperative corneal astigmatism was 0 to 1.28D in group 1 and 1.17 to 3.87D in group 2. Monocular uncorrected far, intermediate, and near visual acuity was 0.21±0.16, 0.21±0.10, 0.19±0.14 LogMAR in group 1 and 0.17±0.13, 0.26±0.20, 0.20±0.16 LogMAR in group 2 (p>0.05). Postoperative sphere and cylinder (D) were 0.05±0.54 and -0.26±0.55 in group 1, 0.07±0.67 and -0.44±0.61 in group 2 (p>0.05). Contrast sensitivity showed no statistical difference. The defocus curve was above 0.2 LogMAR for both IOLs. The aberration study showed higher corneal coma in the toric group, but no increase of corneal coma by the internal eye optics in both groups.

Conclusions:

The combination of trifocality and toricity resulted in clinical non-different outcomes both for visual acuity and for ocular aberration. This is enabling to enlarge to patients with regular astigmatism the possibility of spectacle independence with no additional risk with respect to trifocal IOL.

Financial Interest:

One of the authors research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented