Phototherapeutic Keractomy

Phototherapeutic Keratectomy (PTK) is a laser eye surgery designed to treat corneal diseases and conditions that affect the outer layers of the cornea, leading to visual impairment. PTK uses an excimer laser to remove diseased tissue from the epithelium and anterior stroma of the cornea, allowing the eye to heal and restore clarity to the vision. This procedure is primarily used to treat corneal scarring, dystrophies, and other surface irregularities that cannot be corrected with glasses or contact lenses.

Unlike Laser-Assisted in Situ Keratomileusis (LASIK), which is used for refractive vision correction, PTK focuses on addressing the outer surface of the cornea. It works by carefully reshaping the corneal tissue to remove irregularities caused by scarring, dystrophies, or other disorders, improving vision and reducing discomfort.

PTK is a highly effective treatment for individuals suffering from corneal conditions that have not responded to traditional treatments. The procedure is performed under local anesthesia and is minimally invasive, typically requiring no stitches. With its precision and advanced laser technology, PTK provides a safe and reliable option for those struggling with corneal abnormalities.

Phototherapeutic keratectomy is most commonly used to treat various corneal diseases and dystrophies that affect the cornea’s transparency and shape. The following are common causes and risk factors that may lead to the need for PTK:

Corneal scarring can result from various sources of trauma, such as eye injuries, abrasions, or infections (such as herpes simplex virus keratitis). These scars can cause visual distortion and decreased vision that may not respond to traditional corrective methods, making PTK an ideal solution.

Corneal dystrophies are a group of inherited eye disorders that affect the cornea. Some common dystrophies treated with PTK include:

Map-dot-fingerprint dystrophy: A condition that causes the cornea to develop irregular shapes and layers, leading to visual disturbances and discomfort.

Anterior basement membrane dystrophy: A condition characterized by abnormal growth of the basement membrane in the cornea, which can lead to painful recurrent erosions.