astigmatic keratotomy
Surgical technique involving corneal incisions to reduce astigmatism during cataract surgery.
Full Definition
Astigmatic keratotomy is a surgical procedure that involves making precise incisions in the cornea to reduce pre-existing astigmatism, often performed concurrently with cataract surgery. The procedure utilizes arcuate or radial incisions placed at specific locations and depths based on the patient's astigmatic pattern and magnitude. Modern techniques may employ femtosecond laser technology for enhanced precision and reproducibility. The goal is to reshape the cornea to reduce or eliminate astigmatism, thereby improving uncorrected visual acuity after cataract surgery. Careful preoperative planning using corneal topography and biometry is essential for optimal outcomes.
Usage
Usage note: Often abbreviated as AK or described as LRI (limbal relaxing incisions).
In Context
- "Astigmatic keratotomy was performed to address 2.5 diopters of with-the-rule astigmatism." — Surgical procedure note
- "Femtosecond laser-assisted astigmatic keratotomy achieved excellent refractive outcomes." — Postoperative assessment