Eye health: LASEK laser eye surgery

LASEKlaser eye surgery is a procedure that combines many of the benefits of older vision correction procedures.    

Laser epithelial keratomileusis, or LASEK, combines benefits of the two most commonly performed procedures - LASIK and PRK. LASEK laser eye surgery is used to treat astigmatism, shortsightedness or longsightedness.

What are the advantages of LASEK laser eye surgery?

LASEK surgery includes several advantages, including:

• Complications associated with cutting and reattaching the flap in the cornea are avoided.
• LASEK laser eye surgery causes dry eye less frequently than LASIK laser eye surgery.

In LASEK laser eye surgery, the epithelium, or outer layer of the cornea, is cut not with the microkeratome cutting tool used in LASIK, but with a finer blade called a trephine.

What are the disadvantages of LASEK laser eye surgery?

Disadvantages of LASEK laser eye surgery include:

• Longer visual recovery time compared to LASIK eye surgery. Many LASEK patients will not fully recover functional vision for one to two weeks while their eye heals, which is similar to the healing time experienced in PRK laser eye surgery. LASIK laser eye surgery patients often have good vision by the day after surgery.
• LASEK laser eye surgery may cause more pain and discomfort than LASIK, but less pain than PRK laser eye surgery. Most LASEK laser eye surgery patients say the discomfort lasts about two days or less.
• Patients need to wear a "bandage contact lens" for about three or four days after LASEK laser eye surgery to serve as a protective layer between your blinking eyelids and the treated eye surface. This is not necessary after LASIK.
• After LASEK surgery, patients must use topical steroid drops for several weeks longer than they would after LASIK laser eye surgery.

What are the side effects of LASEK laser eye surgery?

LASEK laser eye surgery usually results in fewer side effects than PRK, but side effects may occur. These can include:

• Sensation of having a foreign object in your eye (can last anywhere from one to four days)
• Temporary reduced vision under poorly lit conditions (up to 12 months)
• Dry eyes requiring the use of moisturising drops (up to six months)
• Hazy or cloudy vision (should disappear within six to nine months)

How do I know if LASEK laser eye surgery is for me?

LASEK laser eye surgery may be better for patients who have steep or very thin corneas, which make it difficult for the surgeon to make a proper LASIK flap. Since traumatic injury to the eye is more serious after LASIK than LASEK laser eye surgery, patients who engage in professional or leisure activities that put their eyes at increased risk of injury (such as boxing) may be better suited for LASEK. LASEK laser eye surgery is better for people with dry eye syndrome because in avoiding a deeper flap, the corneal nerves responsible for the tearing reflex are not cut.