Reading performance after implantation of a modified corneal inlay design for the surgical correction of presbyopia: 1-year follow-up.

Abstract

PURPOSE:

To evaluate change in different reading performance parameters after monocular ACI7000PDT corneal inlay implantation for the improvement of near and intermediate vision.

DESIGN:

Prospective, interventional case series.

METHODS:

Twenty-four patients were scheduled for corneal inlay implantation in the nondominant eye in a university outpatient surgery center. Naturally emmetropic and presbyopic patients between 45 and 60 years of age, with uncorrected distance visual acuity of at least 20/20 in both eyes, without any additional ocular pathology were eligible for inclusion. Bilateral uncorrected reading acuity, mean and maximum reading speed, and smallest log-scaled print size were evaluated with the standardized Radner Reading Charts. Measurements of reading parameters and reading distance were performed with the Salzburg Reading Desk (SRD). Minimum postoperative follow-up was 12 months.

RESULTS:

The reading desk results showed significant changes in each parameter tested. After 12 months the mean reading distance changed from the preoperative value of 46.7 cm (95% CI: 44.1-49.3) to 42.8 cm (95% CI: 40.3-45.3, P < .004), and the mean reading acuity "at best distance" improved from 0.33 logRAD (95% CI: 0.27-0.39) to 0.24 logRAD (95% CI: 0.20-0.28, P < .005). Mean reading speed increased from 141 words per minute (wpm, 95% CI: 133-150) to 156 wpm (95% CI: 145-167, P < .003), maximum reading speed increased from 171 wpm (95% CI: 159-183) to 196 wpm (95% CI: 180-212, P = .001), and the smallest print size improved from 1.50 mm (95% CI: 1.32-1.67) to 1.12 mm (95% CI: 1.03-1.22, P < .001).

CONCLUSIONS:

After ACI7000PDT implantation, there were significant changes in all tested reading performance parameters in emmetropic presbyopic patients. These 1-year results indicate that the inlay seems to be an effective treatment for presbyopia.

• Authors: Alois K Dexl, Orang Seyeddain, Wolfgang Riha, Melchior Hohensinn, Theresa Rückl, Wolfgang Hitzl, Günther Grabner
• Journal: American journal of ophthalmology (Am J Ophthalmol) Vol. 153 Issue 5 Pg. 994-1001.e2 (May 2012) ISSN: 1879-1891 [Electronic] United States
• PMID: 22105801 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: Copyright © 2012 Elsevier Inc. All rights reserved.

Chemical References

• Polyvinyls
• polyvinylidene fluoride

Topics

• Corneal Stroma (surgery)
• Corneal Topography
• Female
• Humans
• Male
• Middle Aged
• Patient Satisfaction
• Polyvinyls
• Presbyopia (physiopathology, surgery)
• Prospective Studies
• Prostheses and Implants
• Prosthesis Design
• Prosthesis Implantation
• Reading
• Refraction, Ocular (physiology)
• Surveys and Questionnaires
• Visual Acuity (physiology)