Ten caveats in keratorefractive surgery.

Area of Science:

• Ophthalmology
• Corneal Surgery
• Refractive Error

Background:

• Corneal topography is essential for understanding visual function.
• Surgical interventions and trauma can alter corneal shape.
• Predicting these topographical shifts is key to managing refractive outcomes.

Purpose of the Study:

• To elucidate the relationship between corneal surgical alterations and subsequent topographic changes.
• To provide a systematic overview of how different surgical manipulations affect corneal curvature.

Main Methods:

• Review of established principles in corneal surgery and wound healing.
• Analysis of documented topographic responses to various surgical procedures and trauma.

Main Results:

• Incisions and tissue removal generally cause corneal flattening.
• Sutures induce varied effects: flattening with loose sutures, steepening with tight sutures.
• Tissue addition leads to corneal steepening over the site and adjacent flattening.

Conclusions:

• Corneal topographic shifts are predictable based on the type of surgical intervention.
• Understanding these predictable changes is vital for refractive surgery planning and outcomes.