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Corneal excision with femtosecond laser followed by PTK may result in improved visual acuity

Cornea. 2011;30(3):301-307.

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Superficial lamellar corneal excision performed with a femtosecond laser and followed by phototherapeutic keratectomy improved visual acuity without complications, a study found.

The study included 12 eyes of nine patients with corneal haze or scarring. A superficial corneal flap was created with a femtosecond laser, and phototherapeutic keratectomy (PTK) and smoothening were performed afterward with 0.25% sodium hyaluronate.

After 12 months of follow-up, mean logMAR best corrected visual acuity improved from 0.62 (mean decimal 0.26) to 0.30 (mean decimal 0.58; P = .035). All patients gained lines of BCVA, according to the study.

Haze grades showed significant improvement, and none of the eyes showed haze regression after 12 months. Coma-like aberrations decreased after the procedure.

The researchers did not observe any vision-threatening complications during the follow-up period.

Although safety and efficacy indices were high, the authors noted that longer follow-up is needed to verify the long-term stability and safety of the procedure.