Cataract surgery with toric intraocular lens implantation in patients with keratoconus

Session Details

Session Title: Cataract Surgery Special Cases

Session Date/Time: Monday 12/09/2016 | 08:00-10:30

Paper Time: 08:24

Venue: Auditorium C6

First Author: : N.Visser THE NETHERLANDS

Co Author(s): :    V. Webers   N. Bauer   R. Nuijts              

Abstract Details

Purpose:

To evaluate clinical outcomes following toric intraocular lens (IOL) implantation in patients with cataract and keratoconus.

Setting:

University Eye Clinic Maastricht, the Netherlands.

Methods:

Sixteen patients (25 eyes) with stable mild to moderate keratoconus (Krumeich stage 1 and 2) underwent cataract surgery with toric IOL implantation (Acrysof SN6AT3-T9 or Rayner T-flex). Postoperatively uncorrected and best-corrected distance visual acuity (UDVA and BDVA), subjective refraction, Alpins vector analysis, surgically induced corneal astigmatism, posterior corneal astigmatism and IOL misalignment were evaluated.

Results:

Mean follow-up was 3 ±2 months . Preoperative BDVA was 0.36 ±0.16 LogMAR and corneal astigmatism 3.79 ±1.36 D (range 1.42–6.38 D). Postoperatively, UDVA and BDVA were 0.17 ±0.15 LogMAR and 0.10 ±0.10 LogMAR, respectively. Residual refractive astigmatism was -1.24 ±0.94 D and 52% of eyes achieved a refractive astigmatism of 1.0 D or less. Surgically induced corneal astigmatism was -0.22 ±0.62 D @ 136 degrees. The mean magnitude of posterior corneal astigmatism was -0.66 ±0.27 D. The mean correction index of 1.17 and magnitude of error of 0.34 D both indicate a general overcorrection. In 3 eyes, a realignment was performed.

Conclusions:

Cataract surgery with toric IOL implantation is an effective treatment option in patients with mild to moderate, stable keratoconus. However, care should be taken to prevent overcorrection.

Financial Disclosure:

... research is funded, fully or partially, by a competing company