Posters

Postoperative visual performance with a bifocal and trifocal diffractive intraocular lens

Poster Details

First Author: F.Helvacioglu TURKEY

Co Author(s):    E. Sunay   S. Kaya Unsal   O. Kavalcioglu   E. Bulut           

Abstract Details

Purpose:

To evaluate and compare the clinical outcomes with a diffractive bifocal and trifocal intraocular lens (IOL) during a 6-month follow-up.

Setting:

Veni-Vidi Eye Center, Istanbul, Turkey

Methods:

Prospective comparative study including 40 eyes of 20 patients (42-80y) undergoing uneventful cataract surgery. Each patient was randomly assigned to one type of IOL, bifocal (20 eyes) or trifocal (20 eyes). Visual, refractive changes and a questionnaire about patients’ satisfaction and visual symptoms were evaluated in a 6-month follow-up. The binocular defocus curve was also measured at 3 and 6 months postoperatively.

Results:

No statistically significant differences between groups were found in postoperative uncorrected and corrected distance visual acuities (P=0.386). Postoperative 6 month uncorrected near, intermediate and distant visual acuities (33 cm) were 0,21, 0,37, 0,03 logMAR in bifocal and 0,09, 0,12, 0,05 in trifocal groups respectively (p1,2<0.001, p3=0.541). Significantly better uncorrected near and intermediate and visual acuity were found during all follow-up in the trifocal group, which was consistent with differences among groups in binocular defocus curve. Spectacle independence was achieved in most of the patients in both groups. Very few patients had complaints of halo and glare in both groups.

Conclusions:

Bifocal and trifocal diffractive IOLs are able to provide an effective visual restoration which is maintained during a 6-month follow-up, with a clear benefit of the trifocal IOL for the intermediate vision.

Financial Disclosure:

None