First results with wavefront-guided photorefractive keratectomy for hyperopia

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Surgery

Background:

• Hyperopic photorefractive keratectomy (H-PRK) aims to correct farsightedness.
• Traditional laser photoablation techniques have limitations in achieving precise refractive outcomes.
• Advancements in excimer laser technology allow for customized ablation profiles.

Purpose of the Study:

• To compare the efficacy and predictability of wavefront-supported customized ablation (WASCA) versus traditional photoablation for H-PRK.
• To evaluate visual acuity and refractive outcomes following both H-PRK methods.

Main Methods:

• Prospective study comparing two groups (40 eyes each) undergoing H-PRK.
• Group 1: Traditional H-PRK. Group 2: WASCA-guided H-PRK.
• Preoperative refraction was similar; H-PRK performed using Asclepion-Meditec MEL 70 excimer laser; 6-month follow-up.

Main Results:

• WASCA group achieved better refractive outcomes (85% within +/-0.50 D) than traditional H-PRK (67.5%).
• Higher percentage of patients gained Snellen lines in the WASCA group (20%) compared to traditional (5%).
• Best spectacle-corrected visual acuity was superior in the WASCA group (1.06) versus traditional (0.96).

Conclusions:

• WASCA-guided H-PRK is a safe and predictable treatment option.
• Customized ablation using WASCA yields superior refractive and visual results compared to traditional H-PRK.
• This advanced approach enhances patient outcomes in hyperopic correction.