Outcomes of correction of high astigmatism with Rayner Toric monofocal intra-ocular lens during cataract surgery

Session Details

Session Title: Pseudophakic IOLs Toric

Session Date/Time: Sunday 06/09/2015 | 16:30-18:30

Paper Time: 18:12

Venue: Room 16

First Author: : S.Young UK

Co Author(s): :    Y. Ong   A. Reddy                 

Abstract Details

Purpose:

There are few published reports on the outcomes of correction of high degrees of co-existing corneal astigmatism in patients undergoing cataract surgery. Rayner Toric T-flex monofocal intraocular lens (IOL) allows for correction of high degrees of astigmatism due to wide range of IOL powers available. We therefore aim to report outcomes of Rayner T-Flex monofocal toric IOL implantation in patients with high degrees of corneal astigmatism undergoing cataract surgery.

Setting:

47 eyes from 44 patients with high corneal astigmatism who underwent cataract surgery.

Methods:

This is a prospective study of patients who underwent Rayner T-Flex toric monofocal IOL implantation during cataract surgery for co-existing corneal astigmatism of more 2.50 dioptres(D). Pre-operative keratometry, laser interferometry with IOL Master, corneal topography, manifest refraction, post-operative unaided and best-corrected distance visual acuity (UDVA and BDVA respectively), post-operative manifest refraction and residual astigmatism were recorded for 47 eyes from 44 patients. Vector analysis was performed using ASSORT software. Data analysis was carried out using IBM SPSS 22.

Results:

The pre-operative corneal astigmatism ranged from 2.50 to 6.50D. Mean pre-operative refractive corneal astigmatism was 4.06±1.00D and mean pre-operative keratometric corneal astigmatism was 3.38±0.69D. The unaided distance visual acuity (UDVA) ≥ 6/6 was achieved in 21%, ≥6/9 in 68% and ≥6/12 in 96.42%. The best-corrected distance visual acuity (BDVA) of ≥6/6 was achieved in 78%, and ≥6/12 in 100%. Mean post-operative residual astigmatism was 1.03±0.90D (p<0.05). 73% had a residual post-operative astigmatism of 1D or less. Vector analysis using ASSORT vector calculator yielded a mean reduction in refractive astigmatism of 4.07±0.33D.

Conclusions:

Rayner T-Flex toric monofocal IOL is highly effective in correcting high degrees of corneal astigmatism during routine cataract surgery.

Financial Interest:

NONE