One-year visual outcomes and patient satisfaction after surgical correction of presbyopia with an intracorneal inlay of a new design

J Cataract Refract Surg. 2012 Feb;38(2):262-9. doi: 10.1016/j.jcrs.2011.08.031. Epub 2011 Dec 3.


Purpose: To evaluate the safety and efficacy of the third-generation Kamra corneal inlay (ACI 7000PDT) implanted monocularly in corneal pockets of emmetropic presbyopic patients to improve near and intermediate vision.

Setting: University Eye Clinic, Paracelsus Medical University, Salzburg, Austria.

Design: Cohort study.

Methods: The corneal inlay was implanted in the nondominant eye over the line of sight by creating a corneal pocket with a femtosecond laser. The minimum postoperative follow-up was 12 months. Distance, intermediate, and near visual acuities were assessed over the follow-up. Other examinations included slitlamp evaluation, central keratometry, computerized corneal topography, endothelial cell count, and central corneal thickness. Patients completed satisfaction questionnaires preoperatively and 3, 6, and 12 months postoperatively.

Results: The study evaluated 24 patients. After a mean follow-up of 12 months, 92% of patients read Jaeger (J) 3 or better with the surgical eye, the mean binocular uncorrected near visual acuity improved from J5 preoperatively to J2, and the mean binocular uncorrected intermediate visual acuity was 20/20 (67% ≥ 20/20). At 12 months, the mean uncorrected distance visual acuity was 20/20 in the surgical eye and 20/16 binocularly. Patients reported no change in distance vision, and their need for reading glasses decreased significantly (P<.001). No inlay was explanted and or recentered during the reported follow-up.

Conclusion: The new corneal inlay was a safe and effective treatment for presbyopia over a 1-year follow-up.

Publication types

  • Clinical Trial
  • Multicenter Study

MeSH terms

  • Cohort Studies
  • Corneal Stroma / surgery*
  • Corneal Topography
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Patient Satisfaction / statistics & numerical data*
  • Presbyopia / physiopathology
  • Presbyopia / surgery*
  • Prospective Studies
  • Prostheses and Implants
  • Prosthesis Implantation*
  • Refraction, Ocular / physiology
  • Surveys and Questionnaires
  • Time Factors
  • Treatment Outcome
  • Vision Disorders / physiopathology
  • Vision Disorders / rehabilitation
  • Vision, Binocular / physiology
  • Visual Acuity / physiology*