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Conductive keratoplasty for the correction of hyperopia
P A Asbell1, R K Maloney, J Davidorf
1Department of Ophthalmology, Mount Sinai Medical Center, New York, New York, USA.
Transactions of the American Ophthalmological Society
|January 19, 2002
Summary
Conductive keratoplasty (CK) effectively treats hyperopia, with 91% of patients achieving 20/40 vision or better after one year. Refractive stability was observed by six months post-procedure.
Area of Science:
- Ophthalmology
- Refractive Surgery
- Corneal Surgery
Background:
- Conductive keratoplasty (CK) utilizes radiofrequency (350 kHz) current to reshape the cornea.
- CK involves inserting a tip into the peripheral corneal stroma at multiple treatment points.
- A full circle of CK spots creates a cinching effect, increasing central corneal curvature to correct hyperopia.
Purpose of the Study:
- To evaluate the efficacy, safety, and stability of Conductive Keratoplasty (CK).
- To report 12-month outcomes from a prospective, multicenter US clinical trial.
- To assess the long-term refractive outcomes of CK in hyperopic patients.
Main Methods:
- 233 patients (401 eyes) with hyperopia (+0.75 to +3.00 D) and minimal astigmatism were enrolled.
- Patients underwent Conductive Keratoplasty (CK) treatment at 13 study centers.
- 12-month postoperative data were collected for safety, stability, and efficacy analysis.
Main Results:
- 91% of eyes achieved uncorrected visual acuity (UCVA) of 20/40 or better.
- 51% of eyes achieved UCVA of 20/20 or better.
- Refractive outcomes were stable, with 58% within +/- 0.50 D and 91% within +/- 1.00 D of target.
Conclusions:
- One-year data confirm the safety and efficacy of Conductive Keratoplasty for hyperopia treatment.
- Small changes in residual refractive error suggest refractive stability is achieved by six months post-CK.
- CK offers a viable surgical option for correcting mild to moderate hyperopia.
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