Transepithelial Photorefractive Keratectomy for Hyperopia Correction: An Uncharted Territory

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Surgery

Background:

• Transepithelial photorefractive keratectomy (Trans PRK) is an evolving refractive surgery technique.
• While effective for myopia, its application in hyperopia correction is less established.
• Existing data on Trans PRK for hyperopia are limited.

Purpose of the Study:

• To review and analyze the outcomes of Trans PRK in correcting hyperopia.
• To compare Trans PRK efficacy in hyperopic eyes with conventional methods.
• To identify challenges and areas for future research in hyperopic Trans PRK.

Main Methods:

• Systematic review of existing literature on Trans PRK for hyperopia.
• Comparative analysis of refractive outcomes, stability, predictability, and complications.
• Evaluation of results based on hyperopic correction levels (low vs. moderate/high).

Main Results:

• Trans PRK demonstrates comparable results to conventional PRK and LASIK for refractive stability, regression, predictability, and complications in low hyperopia.
• Lower hyperopic corrections achieve the best outcomes with Trans PRK.
• Moderate to higher hyperopia cases show increased regression, unstable visual outcomes, and stromal haze.

Conclusions:

• Trans PRK is a viable option for low hyperopic corrections, offering results similar to established procedures.
• Effectiveness and predictability decrease in moderate to high hyperopia, with higher complication rates.
• Further extensive research is necessary to fully ascertain the success and limitations of Trans PRK for a broader range of hyperopic corrections.