AST is an acronym for Advanced Surface Treatment.  This is an excellent technique for treating nearsightedness, farsightedeness, and astigmatism in individuals that are not optimal for the LASIK procedure.  Reasons for choosing AST over LASIK include eliminating certain types of complications, thin corneas and loose skin of the cornea.

Before the development of LASIK, laser vision correction was first performed on the surface of the eye and was called photorefractive keratectomy or PRK.  PRK has been shown to have identical long term visual results as LASIK, but had the disadvantage of slower visual recovery, sometimes as long as 6 weeks, and more discomfort.  Traditional PRK also required the use of medicated eye drops for usually a period of 3 or more months.  Advanced surface treatment is different from PRK in that there is faster visual recovery and improved comfort. This is achieved by using new methods that were not available when PRK was first developed.  

Reasons to consider AST:

• Nearsightedness (myopia).
• Farsightedness (hyperopia).
• Astigmatism (irregularly shaped cornea).
• Desire to decrease or eliminate dependence on glasses or contacts.

The Procedure

In AST, anesthetic drops are applied to the eye for comfort. The epithelium, which is the surface layer of the cornea, is then gently removed by a soft automated brush. Laser treatment is then performed to reshape the eye to the appropriate prescription.

The Recovery

The result of these new methods is improved comfort and faster healing after surface laser treatment. Usually patients see well within several days after AST treatment and only use medicated drops for the first several weeks after the procedure. Today, AST is an excellent alternative for patients that are not ideal for the LASIK procedure.

Contact us today to schedule a consultation!