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Uniformity of scleral implant positioning with a novel ocular fixation device during scleral implant surgery for presbyopia

Poster Details

First Author: B.Soloway USA

Co Author(s):                        

Abstract Details

Purpose:

To evaluate the uniformity of the distance to the limbus of the position of the four scleral implants during Refocus surgery for presbyopia with the VisAbility Implant Systemâ„¢ (VIS) with Docking Station (Refocus Ocular Europe, BV) and to compare the results to earlier methods used for this surgery

Setting:

Private clinical practice

Methods:

A retrospective analysis was performed of the difference between the minimum and maximum intra-operative measured distance to the limbus of the four VIS implants as reported by the surgeon in a total of 592 consecutive VIS surgeries at one site. 210 surgeries were done with the prior technique of measured marking of the eye for scleratome placement and 382 surgeries used the VIS Docking station for determining VIS Implant position. The mean of the ranges were then compared for equal variances between these two groups.

Results:

The difference from maximum to minimum distance to the limbus of the four VIS Implants in patients undergoing VIS surgery ranged from 0.0mm to 2.5mm. Surgeons were able to maintain a maximum to minimum distance to the limbus difference with and without docking of 0.5mm or less in 43% and 32%, 0.75mm or less in 78% and 66%, and 1.0mm or less in 91% and 82% of the eyes respectively. Testing for homogeneity of variance revealed that the variance in ranges was significantly lower for surgeries with VIS Docking Station (p less than 0.01)

Conclusions:

Improved accuracy and precision in VIS Implant positioning has been seen with VIS Docking. Previous studies have shown increased improvement in DCNVA with greater stability over time with VIS Docking as compared to earlier marking and manual Scleratome placement methods of surgery with an additional 24% and 15% of patients reaching 20/40 DCNVA at 6 and 12 months post-op respectively with VIS Docking. The improved positioning of the Refocus Implant may be one of the reasons for this improvement

Financial Disclosure:

One or more of the authors receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, One or more of the authors travel has been funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, One or more of the authors research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented

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