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Crystalline lens surgery in high myopia: a 5 year prospective study

Poster Details

First Author: C.Schweitzer FRANCE

Co Author(s):    B. Cochener   J. Arne   P. Fournie   T. Amzallag   P. Levy   J. Korobelink     

Abstract Details

Purpose:

To analyse visual acuity results and to evaluate the incidence of complications after crystalline lens surgery in high myopia.

Setting:

Multicentre study coordinated by the university hospital of Bordeaux (France).

Methods:

A 5-year prospective, non-comparative study. 159 high myopic eyes (axial length (AL) superior to 26mm and spherical equivalent (SE) inferior to - 6D) of 99 patients were enrolled between 2007 and 2008. All eyes underwent a crystalline lens surgery by phacoemulsification with an intraocular lens implanted in the capsular bag. Patients with a history of retinal detachment were excluded. A clinical examination was performed at Day one, one week, one month, six month, one year and each year postoperatively. Visual acuity with best spectacle corrected visual acuity (BSCVA) as well as peroperative or postoperative complications were systematically analyzed.

Results:

Mean AL was 28.91+/-2.59 mm, mean preoperative SE and BSCVA were -10.16+/-6.46D and 0.37+/-0.29 Log MAR respectively. At one month mean BSCVA was 0.14+/-0.20 Log MAR, with a mean SE of -0,78+/-1,73 D, and remains stable during the follow-up. Peroperative complication rate was ¬0.6% (n=1) with a radial tear of the anterior capsulorhexis without vitreous loss. The incidence of Cystoid macular edema was 1.26% (n=2) and was 8.18% (n=13) for posterior capsular opacities, no endophthalmitis cases were observed. The annual incidence of retinal detachment was 0.49% (n=2) (CI 95%: 0.00; 1.18%) and the annual incidence of Nd: YAG capsulotomy was 7.66% (CI 95%: 4.96; 10.36%). Retinal detachment occurred 6 months after the surgery for the two cases.

Conclusions:

Crystalline lens surgery in high myopia is reproducible and provides a stable and significant improvement in visual acuity. The rate of complication is low but the annual incidence of retinal detachment highlights the need of a careful clinical examination and follow-up to screen and treat retinal tears especially in the first 6 months after surgery.

Financial Disclosure:

NONE

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