Advanced Surface Ablation

Advanced Surface Ablation (ASA):
an Alternative to LASIK

Advanced Surface Ablation (ASA) is a proven, viable alternative for patients with high myopia (also called nearsightedness, up to -12 diopters), dry eyes, thin corneas, steep central corneas or high-oblique astigmatism. In such cases, ASA offers a more conservative option than LASIK.

ASA is modeled on a previous procedure called PRK (Photo Refractive Keratectomy). Once the epithelium (cells that make up the outer surface of the cornea) are removed, the Excimer laser is employed by the surgeon as it would be in LASIK.

The procedure’s appeal is two-fold. First, for an equivalent correction, surface ablation leaves a structurally stronger cornea than after LASIK. Instead of the Intralase laser or a microkeratome (blade), a special brush is utilized to remove the epithelium. This brush leaves a smooth surface with well-defined epithelial edges that appears to enhance healing.

The second benefit is ASA may also provide superior optical outcomes for these aforementioned types of patients. Studies have shown that with traditional LASIK, the making of the flap removes tissue and decreases the surface area of the bed – resulting in a flap that may be too large. ASA does not do this.