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Current limitations and new possibilities of keratometry examination prior to premium IOL implantation

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Session Details

Session Title: Presented Poster Session 23: Refractive Surgery New Techniques / Instrumentation / Devices 2

Session Date/Time: Tuesday 16/09/2014 | 15:00-17:00

Paper Time: 15:15

Venue: Pod 2 (Poster Village)

First Author: : K.Buusova Smeckova CZECH REPUBLIC

Co Author(s): :    Z. Smecka   B. Strnadova           

Abstract Details


Along with continuous technology improvement in eye surgery patients demand better vision quality after cataract and especially RLE surgery, especially when premium IOL is implanted. A frequent problem is the presence of corneal astigmatism, which cannot always be predicted. Current diagnostic possibilities cover a wide range of autorefractokeratometers, topographs and biometry measuring devices Unfortunately, results can be influenced by a worse compliance of the patient, anatomic limits (blefarochalasis) and last but not least – each device may yield different results. We have decided to compare the standard biometry with Zeiss IOL Master and Toric IOL Alcon Online Calculator with Alcon Verion examination unit and IOL calculator. Our aim was to evaluate the benefits of this new device.


All examinations and procedures have been made by a same team of Ocni Klinika Zlin, Zlin, Czech Republic during 1st and 2nd quarter of 2014.


Non-randomized study, 60 eyes of 37 patients with virgin corneas have been included. Besides all standard examinations biometry was measured with Zeiss IOL Master. Toric IOL has been chosen in cases with corneal astigmatism higher than 1,3 Dcyl and Toric IOL Online Calculator has been used for IOL calculation. These values were used for the surgery. All patients have been examined with Verion device and IOL planner has been used for IOL calculation of both non-toric and toric IOLs. These values were just for comparison. SRK-T formula has been used. Standard cataract surgery/RLE followed. One surgeon, one phaco machine, temporal approach, 2,4mm incision, standard phacoemulsification, Acrysof IQ family IOL implanted into bag. Both procedure and healing without complications. One month after procedure UCVA and autorefractometry examination has been performed. Patients have been asked tograde their vision from 1 to 5. Based on subjective and objective criteria the suitability of IOL chosen by both IOL Master/Toric IOL Online Calculator and Verion have been compared.


Due to current data collecting results will be completed later.


Postoperative astigmatism is one of the key success factors in premium IOL implantation. Achieving of the optimal refractive result is a very complex process, where the preoperative diagnostics, surgery planning and surgery itself must be performed as precisely as possible. Verion device offers new possibilities how to influence all steps of this process and how to push the limits of diagnostic and therapy of the corneal astigmatism further.

Financial Interest:


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