ADVANCED SURFACE ABLATION (ASA)
Advanced Surface Ablation (ASA) is a laser procedure that effectively corrects nearsightedness, farsightedness and astigmatism in most patients through a unique minimally invasive approach, free of microkeratome blades. Ideal for patients who are not the suitable candidates for LASIK but are motivated to get free of their spectacles. Many patients are eligible for this procedure and can achieve clearer vision with reduced dependence on glasses or contacts lenses.
Advanced Surface Ablation uses laser treatment on the surface of the cornea after removing the surface cells (called the epithelium) which then regrow. For the painless procedure of advanced surface laser ablation, a drop of anaesthetic is placed upon the eye followed by removal of the surface epithelium (cells) using the laser, alcohol, or scraping gently (or a combination of techniques). A bandage contact lens is placed in the eye for 5 days.
Advantages of Advanced Surface Ablation (ASA)
ASA is the modern and much-improved procedure that replaced PRK.
It’s accurate and effective because it treats only a tiny fraction of the surface in front of it.
Less dry eye.
There is no stromal flap with striae as in LASIK which may cause irregular astigmatism with loss of vision.
No stromal flap complications such as lost, displaced, or buttonholed stromal corneal flaps.
Less thinning, leaving a stronger cornea for all patients.
No DLK, inflammation or infection that occurs in the interface with LASIK.
In ASA there is no stromal cut created by the femtolaser or the microkerotome.
Possibly decreased risk of retinal detachment.