Results After Implantation of Aspheric Toric IOL

Khoramnia, Ramin

Results After Implantation of Aspheric Toric IOL

Friday, April 25, 2014

KIOSKS (Boston Convention and Exhibition Center)

Ramin Khoramnia, MD, David J Apple International Laboratory for Ocular Pathology and International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany

Anna Fitting, MSc, University of Heidelberg, Heidelberg, Germany

Gerd U. Auffarth, MD, David J Apple International Laboratory for Ocular Pathology and International Vision Correction Research Centre, University of Heidelberg, Heidelberg, Germany

Mike P. Holzer, MD, University of Heidelberg, Heidelberg, Germany

Narrative Responses:

Purpose
Clinical evaluation of functional results and quality of vision after implantation of a toric, aspheric intraocular lens (IOL).

Methods
10 eyes of 6 patients (median age: 49 years) with cataract have been enrolled in this ongoing prospective clinical study so far that was approved by the ethics committee. The T-flex aspheric, aberration free IOL (Rayner, UK) was implanted after phacoemulsification. Follow-up examinations were performed two to four months after surgery including subjective refraction, ETDRS uncorrected (UDVA) and corrected distance visual acuity (CDVA), wavefront analysis, analysis of stray light (C-Quant), contrast sensitivity under different lighting conditions (F.A.C.T.) and a questionnaire.

Results
2-4 months after surgery, median UDVA was 0.12 logMAR (range: -0.18 to 0.54 logMAR). Median CDVA increased from 0.20 logMAR (range: 0.02 to 0.44 logMAR) preoperatively to -0.10 logMAR (range: -0.26 to 0.16 logMAR) postoperatively. Median difference between achieved vs. intended spherical equivalent was -0.18 D (range: -1.25 to +0.23 D). Median cylinder improved from -2.63 D (range: -6.50 to -0.25 D) preoperatively to -0.5 D (range: -1.25 to 0.00 D) postoperatively. The median spherical aberrations were -0.36 µm (range: -0.53 to -0.23 µm). Analysis of stray light (C-Quant) revealed a median value of 1.28 log(s) (range: 0.96 to 1.61 log(s)).

Conclusion
The T-flex aspheric IOL provides good and predictable functional results after surgery. The implantation of the toric IOL is an effective method to correct low to moderate astigmatism.