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10 - 14 Sept. 2016, Bella Center, Copenhagen, Denmark

This Meeting has been awarded 27 CME credits

 

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Spontaneously subluxated iris-fixated phakic intraocular lenses: a laboratory study for material analysis

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Session Details

Session Title: Presented Poster Session 14: Phakic IOLs I

Session Date/Time: Sunday 11/09/2016 | 15:00-16:30

Paper Time: 16:10

Venue: Poster Village: Pod 2

First Author: : R.Khoramnia GERMANY

Co Author(s): :    T. Tandogan   M. Holzer   C. Choi   G. Auffarth     

Abstract Details

Purpose:

To conduct a material analysis of spontaneously subluxated iris-fixated phakic intraocular lenses (IOLs) using light- and scanning electron microscopy.

Setting:

David J Apple International Laboratory for Ocular Pathology, University Eye Hospital Heidelberg, Heidelberg, Germany

Methods:

Six explanted Artisan/Verisyse and Artiflex/Veriflex IOLs were analyzed in our laboratory using light- and scanning electron microscopy. Four of the IOLs had been explanted after spontaneous subluxation leading to a decrease in visual acuity, while the remaining two IOLs did not demonstrate signs of disenclavation but had been explanted in the course of planned cataract surgery and thus served as the control in this study.

Results:

Light microscopy showed deformations of the fixation arms on one or both haptics of the IOLs that had subluxated, while scanning electron microscopy revealed micro-cracks in the material. The deformations, which were caused by manipulation of the fixation arms, meant that adequate closure of the fixation arms was no longer possible, meaning that a reliable fixation in the iris stroma was unattainable. At least three of the lenses had been implanted with the use of an IOL haptic expander, which appears to have contributed to the malformation of the haptics. The two control lenses exhibited no signs of material deformation.

Conclusions:

Deformations of the haptics of iris-fixated phakic IOLs can cause irreversible damage leading to disenclavation and inadequate re-enclavation. In such cases, explantation appears to be the only therapeutic option. It is important to adhere to an appropriate implantation technique to reduce the risk of spontaneous subluxation.

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 competing company, 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 competing company, One or more of the authors research is funded, fully or partially, by a company producing, developing or supplying the product or procedure presented, One or more of the authors receives non-monetary benefits from a competing company., One or more of the authors receives non-monetary benefits from a company producing, developing or supplying the product or procedure presented., One or more of the authors receives consulting fees, retainer, or contract payments from a competing company

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