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Six month follow-up after implantation of the new iridotomy-free posterior chamber phakic implantable collamer lens

Session Details

Session Title: Refractive

Session Date/Time: Sunday 17/02/2013 | 08:30-11:00

Paper Time: 09:23

Venue: Hall 3

First Author: : E.Mertens BELGIUM

Co Author(s): :    P. Schraepen              

Abstract Details


The purpose of this retrospective study was to assess the short-term safety of the implantable collamer lens V4C model for myopic and myopic astigmatism correction.


Medipolis Eye Center, Antwerp, Belgium.


Charts of 68 patients who underwent implantation of the V4C Visian ICL model (STAAR Surgical) for myopia and myopic astigmatism correction were reviewed. 130 eyes were included in this analysis. Follow-up ranged from 3 to 6 months. No peripheral iridotomy was performed prior nor during ICL implantation. Mean age was 31.66±7.4, mean preoperative spherical equivalent was -6.15±2.72 diopters (D) (range: -15.75 to -1.25 D), and mean cylinder was -1.11±1.24 D (range: -6.00 to 0.00 D). Main outcome measures evaluated during a 6 month follow-up included: uncorrected visual acuity (UCVA), refraction, best corrected visual acuity (BCVA), vault, intraocular pressure (IOP), and adverse events.


No intra-operative complications occurred. At 6 months, the mean Snellen decimal UCVA was 1.10±0.14 and mean BCVA was 1.11±0.14. Efficacy index was 1.05 and safety index 1.06. The mean spherical equivalent dropped from -6.15±2.72 D to -0.01±0.06 D (ranging from -0.25 to 0.25 D) at 6 months. 96.2% of eyes were within ±0.5 D of attempted correction and 100% of eyes were within ±1D at 6 months. Intraocular pressure was maintained and stable throughout the follow-up period of 6 months. Mean postoperative ICL-lens distance (vault) was 560 microns (range 400 to 800). No eye suffered pupil block or elevated IOP, and no eye needed PI (peripheral iridotomy) or explantation.


Short-term assessment of this new lens design, which incorporates a central port, showed good efficacy, predictability, efficacy and safety up to 6 months for the correction of myopia and astigmatism. Intraocular pressure was maintained and stable showing the excellent performance of the central port in these series.

Financial Disclosure:

... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented

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