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First Author: R.Khoramnia GERMANY
Co Author(s): A. Fitting T. Rabsilber G. Auffarth M. Holzer
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Clinical evaluation of functional results and quality of vision after implantation of a toric, aspheric intraocular lens (IOL).
International Vision Correction Research Centre (IVCRC), Department of Ophthalmology, University of Heidelberg, Heidelberg, Germany
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.
Two to four 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 (n=10). 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) after surgery. Median total HOA RMS (6 mm pupil size) was 1.79 ṁm (range: 0.77 to 3.44 ṁm). The median spherical aberrations were -0.36 ṁm (range: -0.53 to -0.23 ṁm). Analysis of stray light (C-Quant) revealed a median value of 1.28 log(s) (range: 0.96 to 1.61 log(s)).
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.
... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, ... research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented