Evaluation of visual acuity, astigmatism changes and recurrence rate after three types of pterygium surgery

Session Details

Session Title: Inflammation and Pathology

Session Date/Time: Sunday 11/09/2016 | 14:30-16:00

Paper Time: 15:18

Venue: Hall C2

First Author: : K.Krix-Jachym POLAND

Co Author(s): :    M. Tlustochowicz   R. Rozycki   M. Rekas              

Abstract Details

Purpose:

To compare outcomes of three techniques of pterygium surgery –with conjunctival autograft attached with sutures, amniotic membrane attached with fibrin glue and conjunctival autograft attached with fibrin glue - through investigating changes in visual acuity and corneal parameters.

Setting:

Ophthalmology Department of Military Institute of Medicine in Warsaw, Poland

Methods:

59 eyes with pterygium underwent surgery with one of three techniques – with conjunctival autograft attached with sutures (group I - 22 eyes), amniotic membrane attached with fibrin glue (group II - 19 eyes) or conjunctival autograft attached with fibrin glue (group III – 18 eyes). All patients underwent on each visit (before and 1, 30, 90, 180 days after surgery) measurement of BCVA, autorefractometry and corneal topography. Keratometric and refractive outcomes were evaluated by vector analysis. Aggregate astigmatism was calculated after converting polar values of astigmatism to Cartesian values. Frequency of recurrence after pterygium surgery was compared as well.

Results:

The type of surgery has no influence on postoperative BCVA. Preoperatively, centroid of astigmatism was 1,22 D in group I; 1,181 D in group II and 0,748 D in group III. 180 days postoperatively centroid of astigmatism was 0,286 D in group I; 0,349 D in group II and 0,163 D in group III. Postoperatively, 30 and 90 days after surgery, the reduction in astigmatism was statistically significant, although 180 days after surgery the reduction did not reach the level of statistical significance. The difference in recurrence rate of pterygium between groups was not statistically significant (p= 0,209).

Conclusions:

Pterygium excision regardless of the method of surgery cause reduction in corneal astigmatism. All techniques – with conjunctival autograft attached with sutures, amniotic membrane attached with fibrin glue and conjunctival autograft attached with fibrin glue - give similar outcomes if comes to BCVA and recurrence rate.

Financial Disclosure:

NONE