Posters

Comparison of visual performance after implantation of bifocal and trifocal intraocular lenses having identical platform

Poster Details

First Author: Y.Huang CHINA

Co Author(s):                        

Abstract Details

Purpose:

To compare the visual performance after bilateral implantation of a diffractive bifocal intraocular lens (IOL) or a diffractive trifocal IOL from the same manufacturer using the identical IOL platform.

Setting:

Shandong Eye Institute, Qingdao, China.

Methods:

This prospective, non-randomized, and controlled study involved patients who had cataract surgery with bilateral implantation of bifocal or trifocal IOLs. The near, intermediate, and distance visual acuities, defocus curve, optical quality including modulation transfer functions and higher-order aberrations, National Eye Institute Visual Functioning Questionnaire 14, patient satisfaction, spectacle independence, and perception of visual disturbances were assessed in all of them. The follow-up was 3 months.

Results:

Fifty eyes were implanted with a trifocal IOL (AT LISA tri 839MP), and 60 eyes with a bifocal IOL (AT LISA 809M). No significant difference was found in distance or near visual acuity between groups (P≥ .05). However, intermediate visual acuities were significantly better in the trifocal IOL group (P < .01). In the binocular defocus curve, the visual acuity was also significantly better for defocus of -1.00 to -2.00 diopters in eyes with trifocal IOL implantation (P < .01). Similar halos and glare were presented in both groups. The levels of overall satisfaction were similarly high between groups.

Conclusions:

The diffractive trifocal IOLs can provide significantly better intermediate vision and equivalent distance and near visual performance compared to bifocal IOLs, and do not induce extra qualitative vision disturbances.

Financial Disclosure:

None