Cataract surgery outcomes with toric intraocular lenses in eyes with previous radial keratotomy

Session Details

Session Title: Presented Poster Session: Cataract Surgery Special Cases

Venue: Poster Village: Pod 1

First Author: : C.Soare UK

Co Author(s): :    D. Patel   A. Ionides                    

Abstract Details

Purpose:

We aim to report the refractive and visual outcomes of cataract surgery in patients with previous radial keratotomies (RK) who underwent intracapsular placement of a toric intraocular lens (IOL).

Setting:

Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom

Methods:

We retrospectively reviewed records of 9 eyes (6 patients) with previous RKs who underwent routine cataract surgery with an Acrysof SN6AT toric IOL between 2004 and 2018. Outcomes included pre- and post-operative LogMAR unaided (UCVA) and/or best corrected visual acuity (BCVA), biometry data, pre- and post-operative refraction, post-operative spherical equivalent (SE) and prediction error (PE), changes in astigmatism and complications.

Results:

8 eyes had post-operative UCVA recorded; 7/8 had improved UCVA (median LogMAR +0.20, IQR -0.10, +1.50). Despite 7/9 eyes having hypermetropia greater than +3.50D pre-operatively, the post-operative SE was myopic in 8/9 eyes (median PE -1.70D, IQR -2.24D, +0.30D). 8 eyes had biometry recorded; 7/8 had reduced total (corneal and IOL) astigmatism post-operatively versus their pre-operative corneal astigmatism (median reduction 1.95D, IQR 0.79D, 2.24D). Median pre-operative corneal astigmatism was 2.60D (IQR 2.13D, 3.15D) and median post-operative total astigmatism was 1.25D (IQR 0.31D, 2.31D). No significant complications were noted.

Conclusions:

This is the largest reported series of toric IOLs in RK cases. Spherical equivalent outcomes were generally myopic which should be considered when selecting the IOL power. Most cases resulted in an improvement in UCVA and a reduction in astigmatism although residual astigmatism was higher than would be expected for routine toric IOL cases without RK.

Financial Disclosure:

None