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Long-term outcome of a small-aperture corneal inlay for presbyopia correction in an Irish population.

Poster Details

First Author: E.Igras IRELAND

Co Author(s):    P. O'Brien   W. Power           

Abstract Details


To evaluate long-term efficacy and safety of combined procedure laser in situ keratomileusis (LASIK) and small-aperture intracorneal inlay (KAMRA) implantation in the non-dominant eye of a large group of presbyopic, phakic patients with refractive errors.


Single eye laser clinic in Dublin, Ireland.


A retrospective chart review of all patients who underwent femtosecond LASIK with monocular, small-aperture intracorneal inlay insertion for presbyopia, between January 2012 and March 2014, was performed. Emmetropic, hypermetropic and myopic presbyopic patients aged 44-70 years were included. Demographic data and preoperative uncorrected and corrected monocular and binocular, near and distance visual acuity (VA) with manifest refraction (manifest spherical equivalent (MRSE)) were collected and analysed. Postoperative follow-up examinations were scheduled for day 1, week 1 and 1,3,6,12,18 and 24 months after surgery. All operative and postoperative adverse events were recorded.


In total, 146 patients were available, mean 56.6 years, (range:44-67). Median preoperative MRSE was +1.37D(+/-0.87). The majority 116/146(83%) were hypermetropic. Mean preoperative UCNVA improved from N24 to N5 by day one, remaining stable throughout follow-up. At 24 months 98% achieved UCNVA N6 or better with mean UCDVA (implanted eye) improving from 6/12 to 6/7.5. Binocular UCDVA was 6/6 in 88%, with BCDVA unchanged for 84% at 24 months. No patient lost more then one line of BCDVA. MRSE was also stable albeit +0.25D off-target refraction (-0.75D). No adverse events were noted though two inlays were explanted due to sub-optimal adaptation.


The results of this 24-month follow-up study in an Irish population show that combined insertion of a small-aperture corneal inlay with LASIK in presbyopic patients, improves near vision with a slight compromise in distance vision in the implanted eye. Overall, it appears to be a safe, effective and reversible procedure for the treatment of presbyopia.

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