London 2014 Registration Visa Letters Programme Satellite Meetings Glaucoma Day 2014 Exhibition Hotel Booking Virtual Exhibition Star Alliance
london escrs

Course handouts are now available
Click here

Come to London


WATCH to find out why

Site updates:

Programme Updates. Programme Overview and - Video Symposium on Challenging Cases now available.

Evaluating outcomes with a small aperture corneal inlay: global data registry results

Search Abstracts by author or title
(results will display both Free Papers & Poster)

Session Details

Session Title: Presbyopic Corrections

Session Date/Time: Monday 15/09/2014 | 16:30-18:30

Paper Time: 16:36

Venue: Boulevard F (Level 1)

First Author: : W.Riha AUSTRIA

Co Author(s): :    M. Maus              

Abstract Details


Evaluate the long-term safety, effectiveness, reliability and predictability of visual outcomes in patients implanted with the small aperture corneal inlay using a pocket-based procedure.


Results submitted to the KAMRA Data Registry


Retrospective analysis of a series of 8905 presbyopes from 31 centers in 8 countries. The KAMRA™ inlay was implanted into a secondary lamellar pocket either in combination with or without refractive correction using a standardized LASIK procedure. The manifest spherical equivalent refraction (MRSE), uncorrected near acuity (UCNVA), uncorrected distance acuity (UCDVA), best-corrected distance acuity (BCDVA) were evaluated pre-operatively (n = 8905), week 1 (n= 8675), month 1 (n= 8155), month 3 (n= 7180), month 6 (n= 6044), and month 12 (n= 3899). Visual acuity is represented in logMAR.


UCDVA remained essentially unchanged from -0.001 ± 0.33 at pre-op to -0.03 ± 0.15 at week 1 and was maintained out to 12 months. UCNVA improved 3 lines from 0.55 ± 0.28 at pre-op to 0.25 ± 0.21 at week 1 (p<0.0001) and gained an additional line of improvement at month 1 to 0.20 + 0.18. (p<0.0001). Improvements in UCNVA were maintained over the 12-month follow-up. At 12 months, the MRSE in the inlay eye was -0.95D ± 0.71D. Mean BCDVA remained unchanged between pre-op and 12-months post-op with 99.6% of patients achieving a BCDVA of >20/25 at 12 months. 1.62% lost 2 or more lines of BCDVA, however no patient had BCDVA worse than 20/40. 90% of patients were within ±1.0D of intended refraction refractive error at 12 months. The inlay removal rate for this large series was 1.2%.


Pocket-based procedures provide a significant, 4-line improvement in near vision without compromising uncorrected or best-corrected distance vision. Results are stable over time and the removal rate is low.

Financial Interest:

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

Back to previous