PURPOSE: To evaluate the visual outcome of presbyopes following implantation of small-aperture corneal inlay into femtosecond laser intracorneal pockets.
METHODS: Retrospective analysis of 75 presbyopic patients (mean age 55.8 + 4.7 years) treated with a KAMRA inlay between March 2013 and May 2015. Most underwent LASIK 4 weeks prior to inlay aiming for -0.75 D. In all patients, the inlay was implanted monocularly into a femtosecond laser-created intracorneal pocket in the sensory non-dominant eye. The pocket was created with a femotosecond laser using 4 x 4 micron spot/line separation. Uncorrected (U) and best-corrected (BC) distance (D) and uncorrected near (N) visual acuity (VA), refraction and patient satisfaction were assessed at pre-op, months 1, 3, 6 and 12 post inlay. Acuity results are reported in decimal + standard deviation. UCNVA was tested at 30cm.
RESULTS: UCDVA improved from a mean of 0.53 ± 0.34 (6/12) at pre-op to 0.70 ± 0.26 (6/9) at 12 months post-op. UCNVA improved from 0.67 ± 0.30 (J3) to 0.94 ± 0.30 (J1). Mean BCDVA remained stable at 20/20. Mean refraction spherical equivalent was -1.04 ± 0.66 D at 12 months versus +0.74 + 1.03 D at pre-op. At 12 months, 92% of patients reported being able to perform most near tasks without reading glasses and 100% of patients reported being satisfied. 2 patients had the inlay removed.
CONCLUSION: Small aperture corneal inlay implantation improves functional unaided near and distance acuity while maintaining best-corrected distance visual acuity. Patients are satisfied with their result.