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Femtosecond laser pocket software facilitates implantation of intracorneal implants for the correction of presbyopia

Session Details

Session Title: Intracorneal inlays for correction of presbyopia

Session Date/Time: Tuesday 08/10/2013 | 08:00-10:30

Paper Time: 08:54

Venue: Main Lecture Hall (Ground Floor)

First Author: : W.Riha AUSTRIA

Co Author(s): :    G. Grabner              

Abstract Details

Purpose:

To evaluate visual outcomes and procedure safety after small aperture corneal inlay implantation using the pocket software module on the iFS™ femtosecond laser.

Setting:

University Eye Clinic, Paracelsus Medical University, Salzburg, Austria

Methods:

This prospective, interventional case series included 8 naturally emmetropic presbyopic patients between 47 and 56 years of age. The Kamra™ inlay (AcuFocus, Irvine, CA), is an ultrathin (5 um thick) microperforated, opaque artificial annulus (3.8 mm outer diameter and 1.6 mm inner diameter) made of biocompatible polyvinylidene fluoride (PVDF). The device is implanted to improve intermediate and near vision in presbyopic patients. The corneal inlay was implanted in the non-dominant eye over the visual axis after creation of a corneal pocket at 220?m depth, using the new pocket software module of the iFS Femtosecond Laser (AMO, CA). Refraction, uncorrected near (UNVA), intermediate (UIVA) and distance visual acuity (UDVA), as well as subjective patient satisfaction were evaluated over a follow-up of 12 months.

Results:

There were no surgical complications; all pockets were created at the planned depth followed by successful implantation of a small aperture inlay. After 1 day (in the implanted eye) the mean uncorrected distance and near VA changed to 20/25 (preop 20/16) and J5 (preop J7/8) respectively; at week 1 acuities were 20/20 and J3 and were 20/20, J2 at 1 month after surgery. All patients achieved monocular acuities of 20/25 or better for distance and J3 or better for near, and binocular acuities of 20/16 and J3 or better at the last visit. The refraction remained stable over this time period. Preop mean S.E. 0.03 (±0,16) D changing to -0.2 (±0.4) D without any induced manifest astigmatism. At 6 months all patients claimed they would undergo the surgery again. The complete follow-results will be presented at the meeting

Conclusions:

The pocket software for the iFS appears to be safe and effective for creating intrastromal pockets to implant small aperture corneal inlays in emmetropic presbyopes, providing fast visual recovery. The safety and efficacy of the Kamra™ inlay (implanted using a mask to create the corneal pocket) has been previously published in larger series.

Financial Interest:

... receives consulting fees, retainer, or contract payments from a company producing, developing or supplying the product or procedure presented, ... research is funded, fully or partially, by a competing company