PTK (Phototherapeutic Keratectomy)

Excimer laser treatment to remove superficial corneal irregularities, scars, and dystrophies, or to treat recurrent corneal erosion syndrome.

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PTK (Phototherapeutic Keratectomy) treatment at Menassa Vision

Overview

Phototherapeutic Keratectomy (PTK) uses the same precise excimer laser technology as LASIK and PRK, but for therapeutic rather than refractive purposes. The laser precisely removes diseased or irregular corneal tissue, creating a smoother optical surface.

PTK is particularly effective for treating recurrent corneal erosion syndrome—a painful condition where the surface layer of the cornea repeatedly breaks down, often upon waking. By creating a smooth, regular surface, PTK allows the epithelium to heal and adhere properly, often providing permanent relief.

The treatment is also used for anterior corneal dystrophies such as epithelial basement membrane dystrophy (EBMD), Reis-Bücklers dystrophy, and granular dystrophy. It can also improve vision affected by superficial corneal scars from previous injury or infection.

PTK is performed as an outpatient procedure under topical anaesthesia. The laser treatment itself takes only minutes, though the eye requires several days to heal as the surface epithelium regenerates.

What This Means for You

Non-invasive laser treatment—no incisions or sutures
High success rate for recurrent erosion syndrome
Can prevent or delay the need for corneal transplant in some cases
Outpatient procedure with relatively quick recovery
Treats the underlying pathology, not just symptoms

Ms. Menassa's Approach

Ms. Menassa's corneal expertise allows her to carefully assess which patients will benefit most from PTK. Pre-operative mapping of the corneal surface helps determine the optimal treatment depth and approach.

For recurrent erosion syndrome, she may combine PTK with epithelial debridement or stromal micropuncture depending on the underlying cause. The goal is always to address the root problem, not just treat symptoms.

Her conservative approach ensures that only the minimum amount of corneal tissue is removed, preserving corneal thickness while achieving the therapeutic goal. Post-operative care includes intensive lubrication and close monitoring during healing.

Is This Right for You?

Patients with recurrent corneal erosion syndrome unresponsive to conservative treatment
Those with anterior corneal dystrophies affecting vision (EBMD, Reis-Bücklers, granular)
Patients with superficial corneal scars from previous injury or infection
Those with band keratopathy or other superficial corneal irregularities

Frequently Asked Questions

LASIK reshapes the cornea to correct refractive errors (short-sightedness, astigmatism). PTK removes diseased or irregular tissue to treat corneal conditions. Both use the same excimer laser but for different purposes.

PTK has a high success rate for recurrent corneal erosion syndrome, with studies showing 80-90% of patients experiencing significant improvement or complete resolution. Some patients may need repeat treatment.

The first few days involve wearing a bandage contact lens while the surface heals. There may be discomfort, light sensitivity, and blurred vision during this time. Most patients return to normal activities within a week.

Yes, PTK can be repeated if corneal thickness permits. However, each treatment removes some corneal tissue, so the number of possible treatments is limited. Ms. Menassa will discuss this during your consultation.