Posters

Toric IOL implantation in false emmetropic eye

Poster Details

First Author: P.Rosetta ITALY

Co Author(s):    L. Pagano   A. Montericcio   P. Vinciguerra              

Abstract Details

Purpose:

To present appropriate patient selection and counselling in toric IOL implantation when total corneal astigmatism is compensated by internal astigmatism, inducing a non-astigmatic preoperative refraction. To determine which parameters select in order to achieve the best visual outcomes.

Setting:

Humanitas University Clinical and Research Center, Rozzano, Milan, Italy

Methods:

8 eyes underwent phacoemulsification with toric IOL. The mean preoperative refraction error was spherical or with astigmatism <1D. To acquire total and internal refractive error we performed Topoaberrometry (Nidek OPD-Scan), for anterior and posterior corneal astigmatism we performed Tomography ( Pentacam; OCULUS) and to estimate toric IOL power we used VERION image-guided surgery system. Preoperative aberrometric scan showed, in all cases, the presence of anterior corneal astigmatism between -1.52D and -3.15D, which was compensated by a perpendicular internal astigmatism between -1.17D and -2.02D. No significant posterior corneal astigmatism was found.

Results:

The refractive target was emmetropic in all cases. Postoperative refraction was either emmetropic or with a minimal spherical defect ≤ 0.75D and astigmatic defect ≤ 0.50D.

Conclusions:

These cases prove that is mandatory to make a detailed preoperative examination in order to assess the presence of a compensatory internal astigmatism, even in emmetropic patients. Furthermore it is essential to inform the patient that only a toric IOL can fully restore an emmetropic outcome.

Financial Disclosure:

None