Influence Of Angle Alpha On Defocus Curve In Eyes With Trifocal Iol.

Published 2022 - 40th Congress of the ESCRS

Reference: PO111 | Type: Free paper | DOI: 10.82333/qre1-p905

Authors: Sonal Shah* ¹ , Smitesh Shah ² , Siddharth Sheth ³ , Mohammed Kazi ⁴ , Onkar Pirdankar ⁴

¹Cataract and Refractive ,Isha Netralaya,Kalyan,India, ²Cataract and Vitreo-Retina,Isha Netralaya,Kalyan,India, ³Cataract and Pediatric,Isha Netralaya,Kalyan,India, ⁴Optometry,Isha Netralaya,Kalyan,India

Purpose

To evaluate the influence of angle alpha on defocus curve in eyes with Trifocal IOL.

Setting

Private Eye Hospital, India

Methods

A prospective study where subjects implanted with trifocal IOL (Acrysof IQ PanOptix, Alcon), aged 40-70 years with BCVA better than 0.2 logMAR were included. Subjects with IOP > 22mmHg, any ocular disease, previous refractive surgery, any intra-operative complications were excluded. At post operative 1 month follow up, Monocular distance corrected defocus curve was obtained with each defocus lens ranging from+2.00 to -3.0D (0.5D steps) in randomized order using logMAR chart. For Statistical purpose the eyes were divided in to two groups based on angle alpha magnitude (Group 1:≤ 0.45 and Group 2: > 0.45) and the defocus curve was compared using two sample t test.

Results

Total 93 eyes with mean±SD age of 58.21±7.97 years were included. The mean±SD magnitude of angle alpha in group 1 (63 eyes) and group 2 (30 eyes) were 0.30±0.08 and 0.56±0.07 respectively. In both the groups, the visual acuities at each defocus level were similar (p>0.05)

Conclusions

We did not find any effect of angle alpha on defocus curves in eyes with trifocal IOLs.