Retrospective Comparison of Visual Outcomes After KAMRA Corneal Inlay Implantation With Simultaneous PRK or LASIK.

PURPOSE: To report a retrospective study of simultaneous LASIK versus photorefractive keratectomy (PRK) with accompanying small-aperture cornea inlay implantation (KAMRA; AcuFocus, Inc., Irvine, CA) in treating presbyopia.

METHODS

Simultaneous LASIK/inlay and simultaneous PRK/inlay was performed on 79 and 47 patients, respectively. Follow-up examinations were conducted at 1, 3, and 6 months postoperatively. The main outcome measures were safety, efficacy, predictability, and stability with primary emphasis on monocular uncorrected near visual acuity (UNVA).

RESULTS

Both groups met U.S. Food and Drug Administration criteria for efficacy with 95% and 55% of the LASIK/inlay group and 83% and 52% of the PRK/inlay group having a monocular UNVA of 20/40 (J5) and 20/25 (J2), respectively, at 6-month follow-up. Ninety-two percent of the LASIK/inlay group and 95% of the PRK/inlay group had a UDVA of 20/40 or better at 6 months. Two eyes lost one line of corrected distance visual acuity (CDVA). Mild hyperopic shift was noted in both groups at 6 months.

CONCLUSIONS

Simultaneous PRK/inlay and LASIK/inlay meet the U.S. Food and Drug Administration standards for efficacy and safety based on 6-month preliminary results and have similar outcomes to emmetropic eyes. [J Refract Surg. 2018;34(5):310-315.].