Related Experiment Video
Updated: Mar 7, 2026
Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
Published on: September 20, 2024
Stereoacuity after small aperture corneal inlay implantation
Steven H Linn1, David F Skanchy2, Tyler S Quist3
1Department of Clinical Research, HDR Research Center, Hoopes Vision, Draper, UT.
Purpose:
The aim of this study was to compare stereoacuity before and after KAMRA corneal inlay implantation for the correction of presbyopia.
Patients And Methods:
This is a prospective study of 60 patients who underwent KAMRA inlay implantation. Patients were examined before and 6 months after surgery for stereoacuity, uncorrected distance visual acuity (UDVA), and uncorrected near visual acuity (UNVA).
Results:
The mean stereoacuity before surgery was 29.5±28.1 arcsec (range: 20-200) and at 6 months was 29.8±26.4 arcsec (range: 20-200). The decline in stereoacuity was not statistically significant. At 6 months follow-up, UDVA was 20/25 or better in all 60 patients and UNVA was J2 (20/25) or better in 51 (85%) patients.
Conclusion:
There is no significant change in stereoacuity following KAMRA inlay implantation. The KAMRA inlay is a good treatment option for improving near vision in presbyopic patients while preserving stereoacuity and distance vision.
