Posters

Postoperative astigmatism and axis deviation of AMO Tecnis® Toric IOL

Poster Details

First Author: A.Sancho SPAIN

Co Author(s):    M. Idoipe Corta   R. Hernandez Vian   G. Lopez Valverde   A. Mateo Orobia   E. Del Prado Sanz   L. Pablo Julvez     

Abstract Details

Purpose:

To evaluate the deviation of the AMO Tecnis® Toric intraocular lens (IOL) axis regarding axis estimated in Tecnis® IOL Calculator Platform. To establish our postoperative astigmatism and to determine the relation between this deviation and the postoperative astigmatism.

Setting:

Miguel Servet Universitary Hospital. Zaragoza.

Methods:

We operated seventy-one eyes of forty-four patients with an AMO Tecnis® Toric IOL choosen by Tecnis® IOL Calculator Platform. We measured postoperative axis with slit lamp and with Pentacam® in the first week after the surgery, at the first month, at three months and at the six months and we calculated de deviation with respect to the estimated axis. We also evaluated the residual astigmatism in these visits. Relation between deviation and astigmatism was estimated by Pearson correlation coefficient.

Results:

The mean of deviation with regard calculated axis at a week, a month, three months and six months measured by slit lamp is 4,55 with a standard deviation of 4,0; 4,90±3,97;4,98 ± 3,59 and 4,55 ± 4,40. When we use Pentacam® for the exam the results are 5,39 ± 4,50; 5,43 ± 4,33; 4,92 ± 3,67 and 5,17 ± 4,23. The postoperative astigmatism examinated by autorefractometer in the same dates was -1,06; -0,94; -0,90 and -0,99.

Conclusions:

Our mean postoperative astigmatism is -0,97 being residual calculated astigmatism -0,1967. Pearson coefficient correlation between residual astigmatism and axis IOL deviation shows a weak lineal correlation (-0,173 and -0,1566 measured by slit lamp and Pentacam® in the first exploration), which means it is not possible to use axis deviation to estimate residual astigmatism after cataract surgery with AMO Tecnis® Toric IOL.

Financial Disclosure:

None