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Photo-Therapeutic Keratectomy (PTK)

Photo-Therapeutic Keratectomy laser surgery is done specifically to treat cornea injury or disease issues such as scars on the cornea or other types of corneal surface disease, including recurrent erosions syndrome of the cornea when other, more traditional treatments have failed

Similar to PRK, this type of laser eye surgery does not include vision correction. It is done for therapeutic reasons, to correct documented medical eye issues.

In PTK, the first layer of the cornea, the epithelium, is removed using an alcohol solution, and the excimer laser is applied to the eye, removing  a minute layer. In theory, this provides a more sound base layer for healing of the erosion, and also allows the corneal epithelium cells to heal all in one “sheet” – this making healing more likely overall. Following the surgery, a bandage contact lens is put in place to allow healing and reduce pain. There is also a regimen of antibiotic, steroid and pain reducing eye drops that must be followed, as well as the use of moisturising eye drops.

How is PTK different from LASIK or PRK?

Photo-Therapeutic Keratectomy is a laser procedure that is very similar to the more well know vision correction surgery know as PRK. Preparation, the procedure itself, and post-op are identical in both types of surgery. The main difference is that in Photo-Therapeutic Keratectomy, no vision correction is done. The main purpose is to treat surface level corneal disease and not to remove the need to wear glasses or contact lenses.

PTK differs from LASIK in two main ways. Firstly, LASIK is performed to reduce spectacle and contact lens dependence, therefore making it  a vision correction procedure. Secondly, in LASIK, a flap in the cornea is created.

In PTK, no flap is created, making it appropriate for those with thin corneas or dry eye. Also, in PTK no vision correction reshaping is done.

What is the success rate for PTK?

PTK has been done successfully for over 10 years, since the advent of the excimer laser and its use in therapeutic treatments. Research into laser eye surgery has shown that this can be an effective way to treat recurrent corneal erosion syndrome with the success rate being reported as high as 90%.

Our Locations

LaserVision was initially founded in Guildford, Surrey. Now with clinics in over 6 locations, we are able to treat the eye conditions of patients nationwide. This treatment is available at:

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