A statistical analysis of radial keratotomy results

Area of Science:

• Ophthalmology
• Refractive Surgery

Background:

• Radial keratotomy (RK) is a surgical procedure to correct myopia.
• RK involves making radial incisions in the cornea to flatten it.

Purpose of the Study:

• To statistically analyze the outcomes of the first 557 radial keratotomy surgeries performed.
• To evaluate the visual acuity and refractive error changes after RK.

Main Methods:

• Statistical analysis of 557 consecutive RK cases.
• Assessment of preoperative and postoperative refractive error and visual acuity.
• Tracking of patient glasses-wearing habits post-surgery.

Main Results:

• Mean postoperative refractive error was -4.00 diopters.
• One year post-RK, 95% of patients with myopia ≤ -3.00 D achieved ≥ 20/40 visual acuity.
• 79% of patients with myopia -3.25 to -6.00 D achieved ≥ 20/40 visual acuity.
• Mean reduction in keratometry readings was 2.95 diopters at 6 months.
• 85% of patients with myopia < -6.00 D rarely or never wore glasses post-surgery.

Conclusions:

• Radial keratotomy demonstrated significant efficacy in correcting myopia.
• The procedure resulted in substantial improvements in uncorrected visual acuity for a majority of patients.
• RK reduced the dependency on corrective lenses for many individuals.