Radial keratotomy learning curve using the American technique

Area of Science:

• Ophthalmology
• Refractive Surgery
• Surgical Learning Curves

Background:

• Radial keratotomy (RK) is a refractive surgical procedure to correct myopia.
• The centrifugal (American) technique is one method used for RK.
• Understanding the surgeon's learning curve is crucial for optimizing patient outcomes.

Purpose of the Study:

• To evaluate the learning curve for a novice refractive surgeon performing RK.
• To assess the impact of surgical experience on refractive outcomes and complications.

Main Methods:

• Retrospective review of the first 100 RK cases performed by a single surgeon using the American technique.
• Cases were divided into five sequential groups of 20.
• Outcomes analyzed included visual acuity, refractive error, complications, and enhancement rates at 1 and 3 months postoperatively.

Main Results:

• Significant improvement in early postoperative refractive error from -1.73 D to 0.45 D.
• Marked decrease in enhancement rates from 50% in the first 20 cases to 0% in the last 20 cases.
• Improved uncorrected visual acuity, with 100% of patients in the final group achieving better than 20/40.

Conclusions:

• Surgical experience with the American technique for RK leads to significant improvements in refractive outcomes.
• Enhancement rates decrease substantially as the surgeon gains experience.
• Complication rates remained stable throughout the surgeon's learning period.