PTK uses the laser to remove a very thin layer from the surface of the cornea. Unlike vision correction, it aims to treat disease: scars, hazy patches, roughness or deposits on the surface that blur sight or cause glare, and, in some cases, recurring painful corneal erosions. Removing the affected layer smooths the surface and helps clear vision.

At a laser surgery hospital in Mumbai like Apex, a cornea specialist examines the eye with a slit lamp and corneal mapping to confirm that the problem is at the surface and not deeper. A protective contact lens is worn for a few days, drops are used for several weeks and healing is followed at regular visits. Spectacles may still be needed afterwards.

How the Procedure Can Help

PTK can clear surface scars and smooth an irregular cornea, improving vision and comfort and, in some patients, delaying or avoiding a corneal transplant.

Risks and Considerations

PTK removes a thin layer, so the eye's prescription may shift, often towards long sight. Haze, delayed healing, infection and return of the original problem can occur. Deeper scars may not clear fully, and other treatment may be discussed.