Posters

Effect of blue light-filtered intraocular lens on contrast sensitivity in patients with glaucoma

Poster Details

First Author: N.Kitnarong THAILAND

Co Author(s):    L. Udomwech   N. Chongthurakit                 

Abstract Details

Purpose:

To evaluate the effects of blue light-filtered (BF) intraocular lens (IOLs) on contrast sensitivity (CS) comparing to conventional ultraviolet-blocking (UVB) IOLs in patients with concurrent cataract and glaucoma

Setting:

This was a prospective randomized comparative interventional study from patients with cataract and glaucoma who were scheduled for cataract surgery with IOLs implantation at department of ophthalmology, faculty of medicine Siriraj hospital, Mahidol university, Bangkok, Thailand during October 2016 to March 2018.

Methods:

The patients randomly received IOLs implantation either BF-IOLs or UVB-IOLs. The data collection included pre-operative and post-operative ophthalmoscopic findings, best corrected visual acuity (BCVA) in Log MAR, intraocular pressure (IOP) and contrast sensitivity (Log CS) at spatial frequency 1.5, 3.0, 6.0, 12.0, 18.0 cycle per degree (CPD) using functional vision analyzer. Postoperative log CS at 2 months-follow-up were compared between groups.

Results:

A total of 48 eyes from 35 patients were enrolled. Among 48 eyes, 24 eyes (50%) were primary angle closure glaucoma and 24 eyes (50%) were primary open angle glaucoma. Sixteen patients (22 eyes) received BF-IOL and 19 patients (26 eyes) received UVB-IOLs. Postoperative overall log CS was significantly improved at all spatial frequencies (p<0.001) in both groups. Comparison of post-operative log CS between BF-IOL/UVB-IOL (p value) at spatial frequency 1.5, 3.0, 6.0, 12.0, 18.0 CPD were 0.68/0.73, 0.70/0.79, 0.61/0.70, 0.44/0.51 and 0.29/0.31 respectively. The overall post-operative log CS was not statistically significant different between groups (p=0.40)

Conclusions:

Cataract extraction with intraocular lens implantation improved visual acuity and contrast sensitivity in patients with concurrent cataract and glaucoma. There was no statistically significant difference in post-operative contrast sensitivity at all spatial frequencies between blue light-filtered and conventional ultraviolet-blocking IOLs in this small sample size glaucoma patients.

Financial Disclosure:

None