Posters

Influence of superotemporal and superonasal clear corneal incision after phacoemulsification cataract surgery on early postoperative astigmatism

Poster Details

First Author: S.Matic CROATIA

Co Author(s):    I. Pivić-Kovačević   M. Jelić-Vuković   J. Barać   D. Biuk   M. Matić        

Abstract Details

Purpose:

The aim of this study was to analyse the difference between preoperative and early postoperative astigmatism after right eye superotemporal or left eye superonasal clear corneal incision after phacoemulsification cataract surgery.

Setting:

This prospective cohort study included 30 patients of both sexes, who underwent phacoemulsification cataract surgery.

Methods:

All patients underwent keratorefractometry measurement preoperatively and one month postoperatively.The best corrected visual acuity(BCVA) before and after surgery was determined as well as intraocular pressure measurement by Goldmann applanation tonometry.Comparison of astigmatism on the day of the surgery and one month after the surgery using modified table for manual scoring of astigmatism according to Morlet was done to all.The clear corneal incision was done on 120 degree meridian to all patients (right or left eye) following with standard phaco surgery using stop and chop technique.All surgeries were performed on Infinity Alcon surgical machine by the same surgeon.

Results:

The BCVA after phacoemulsification cataract surgery was significantly improved (median 1.0) compared to the BCVA before the surgery (median 0.3) (Wilcoxon test, p < 0.001). In 4 (14 %) patients, postoperative astigmatism was lower, in 13(43 %) patients, it remained unchanged and in 13 (43 %) patients, it was higher than preoperative astigmatism. There was no statistically significant difference between the preoperative and postoperative intraocular pressure (Wilcoxon test, p = 0.05) or astigmatism (Wilcoxon test, p = 0.06). Intraoperative surgical parameters such as cumulative dissipated energy (CDE), aspiration time and volume of estimated fluid used during the surgery did not have significant effect on astigmatic changes after the surgery (Kruskal Wallis test, for CDE p = 0.11, for aspirated fluid volume p = 0.29, and for aspiration time p = 0.37).

Conclusions:

There was no statistically significant difference between preoperative and postoperative astigmatism after superotemporal or superonasal clear corneal incision. This indicates that the superotemporal or superonasal 120 degree meridian clear corneal incision has minimal effect on postoperative astigmatism.

Financial Disclosure:

gains financially from competing product or procedure, travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented, receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, is employed by a competing company, has significant investment interest in a company producing, developing or supplying product or procedure presented