Usefulness Of The Toric Alignment Check Module Of The Itrace Analyser In Assessing The Alignment Of An Intraocular Toric Lens In Relation To The Axis Of Corrected Corneal Astigmatism Postoperatively

Abstract

Adam Cywinski, Daria Bloch

Correct alignment of an intraocular toric lens in relation to the axis of corneal astigmatism is, next to the precise calculation of its value, the most important element that allows for the best possible postoperative vision to be obtained. However, it is not always possible to achieve this during lens implantation. In the era of an increased number of implantations of multifocal, complex intraocular lenses, it is sometimes unknown whether the reason for poor visual acuity lies in the complexity of the lens structure or in its misalignment in relation to the axis of corneal astigmatism. In such cases, programs indicating whether the lens has been aligned with the axis of corneal astigmatism are helpful. The “Toric Alignment Check” module of the iTrace analyser is one of them. The study describes thirteen cases of axial misalignment of toric lenses and the change in the quality of vision and visual acuity after its rotation to the correct axis using the above module.

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