Posters

New customised toric IOL using Barrett calculator achieved the best significant rotational stability, accuracy and patient satisfaction as compared to conventional toric IOL

Poster Details

First Author: J.Agrawal INDIA

Co Author(s):                        

Abstract Details

Purpose:

To compare outcome, prediction error, rotational stability and the patients satisfaction in cases using customized toric plate haptic IOL calculated by Barrett toric calculator.

Setting:

Agrawal Eye Care, Patna, India

Methods:

Measurements are taken by IOL master and OCT. Toric IOL calculations were calculated by Online Barrett toric calculator.Post operative toric IOL axis alignment measured by Adobe photoshop 7. In twentyeight patients, twentyseven eyes were implanted toric IOL calculated by Barrett toric calculator. In fourteen patients, seventeen eyes were implanted customized toric plate haptic IOL based on specially designed criteria. Postoperative manifest cylinder was compared to preoperative predicted error by each method. Degree of rotational error and pts satisfaction were measured after three months.

Results:

Median absolute errors in predicted residual astigmatism were lowest with customised toric IOL with Barrett calculator for both ATR and WTR(Median value varies 0.27D to 0.22D)); followed by Alcon IOL (p<.001) with Barrett calculator for both ATR and WTR(Median value varies 0.47D to 0.41D) . Rotational stability & issue of axis were analysed by centroid residual astigmatism prediction error (D) �SD for WTR and ATR. Customised toric IOL with Barrett calculator had lowest centroid error/ lowest SDs(Centroid �SD(D) 0.26@81�0.31 to 0.21@17�0.35). All data were analysed by Annova test to test significance with 95% confidance interval, which was significant.

Conclusions:

So during calculation of Toric IOL, it is essential to consider PCA in all cases ; and the most accurate prediction of residual astigmatism was achieved by Barrett toric calculator.Our use of new customised toric IOL using Barrett calculator achieved the best significant rotational stability, accuracy and patient satisfaction as compared to conventional toric IOL.

Financial Disclosure:

NONE