Effect of glare on contrast sensitivity in subjects implanted with multifocal IOLs

Session Details

Session Title: Presented Poster Session: Enlarged Depth of Focus vs Multifocal IOLs

Venue: Poster Village: Pod 1

First Author: : S.Shah INDIA

Co Author(s): :    S. Shah   S. Rothe   O. Pirdankar                 

Abstract Details

Purpose:

To assess the effect of glare on contrast sensitivity in subjects implanted with multifocal IOLs.

Setting:

Isha Netralaya, Kalyan, Maharashtra, India.

Methods:

Its a prospective study where subjects implanted with multifocal IOLs (SeeLens, Hanita and Tridiff, Care Group), aged between 40-70 years and best corrected visual acuity better than 0.2 logMAR were enrolled. Subjects with intra operative complications, ocular disease were excluded.  Effect of glare on contrast sensitivity was measured using CSV- 1000 HGT (Vector Vision). Contrast sensitivity at 4 spatial frequencies (3,6,12 and 18 cycles per degree (CPD)) and real-world driving scenes available with different contrast levels were measured with and without automatically calibrated glare sources.

Results:

Fifteen and 14 eyes were implanted with Hanita and tridff IOL respectively. In subjects implanted with Hanita IOL we did not find significant difference in contrast sensitivity across all spatial frequencies except 12 CPD (Paired t test, p=0.01). Similarly, in subjects implanted with tridiff IOL we did not find significant difference in contrast sensitivity across all spatial frequencies (Paired t test, p>0.05).  Also, we did not find any significant effect of glare on real world driving scenes (Chi square, p>0.05).

Conclusions:

We did not find any effect of glare in subjects implanted with Hanita and Tridff IOL. This could be attributed to IOL design however needs to be confirmed with larger sample size.

Financial Disclosure:

None