Correcting corneal astigmatism with a non-toric IOL

Session Details

Session Title: Presented Poster Session: EDOF IOLs

Venue: Poster Village: Pod 1

First Author: : J.Vukich USA

Co Author(s): :                           

Abstract Details

Purpose:

To evaluate the ability of a pinhole intraocular lens (IOL) to correct corneal astigmatism after cataract surgery.

Setting:

Prospective, multicenter, non-randomized, interventional study of 114 subjects.

Methods:

Patients were implanted monocularly with an IC-8 IOL. The IC-8 IOL is an aspheric monofocal IOL with an embedded opaque ring and contains no toric correction. Patients were divided into three groups based on pre-existing corneal astigmatism: group 1 (< 0.75 D), group 2 (0.76 – 1.50 D) and group 3 (> 1.50 D). Patients with sphere greater than 1.00 D were excluded from the analysis. Monocular uncorrected distance, intermediate and near visual acuity in the IC-8 IOL eye were combined across 1, 3 and 6 month exams and compared between groups. Results are reported in logMAR + standard deviation.

Results:

UCDVA was 0.01 + 0.13, 0.06 + 0.13 and 0.28 + 0.17 for group 1 (n=114), group 2 (n=25) and group 3 (n=6), respectively. Achieved UCIVA from group 1, 2 and 3 were 0.09 + 0.12, 0.09 + 0.10 and 0.32 + 0.24, respectively. For UCNVA, patients achieved 0.22 + 0.12, 0.23 + 0.10 and 0.37 + 0.27 in groups 1, 2 and 3, respectively. Statistical analysis showed for all measured distances, groups 1 and 2 were the same. Group 3 was statistically significantly worse than group 1 at far (p=0.0006), intermediate (p=0.0212) and near (p=0.2164).

Conclusions:

A small-aperture IOL can be used to correct up to 1.50 D of pre-existing corneal astigmatism without need for alignment.

Financial Disclosure:

travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented