Manual-guided microkeratome provides precise cuts

Lisbon, Portugal - The Moria LSK-one microkeratome provides great accuracy and reproducibility at all cut depths in respect to the intended flap thickness, reported Carlo Lackerbauer, MD, of the University Eye Hospital Munich, Center for Refractive Therapy, Munich, Germany.

“The microkeratome is an important instrument for lamellar keratoplasty. The accuracy and reproducibility of the corneal flap thickness are important for the refractive outcome,” Dr. Lackerbauer stated.

Dr. Lackerbauer and colleagues used optical low-coherence reflectometry to assess the accuracy and reproducibility of the microkeratome in 100 porcine eyes. The cut depths used were 150, 200, 250, 300, and 350 µm. Three independent readers reviewed the optical-coherence reflectometry results.

The results from all readers showed a high correlation, Dr. Lackerbauer reported Sunday at the European Society of Cataract and Refractive Surgeons meeting. With the 150-µm cut depth the rho was 0.89, p = 0.0002; with the 200-µm cut depth, 0.87, p = 0.0005; with the 250-µm cut depth, 0.93, p = 0.0002; with 300-µm cut depth, 0.94, p = 0.0001, and with the 350-µm cut depth, 0.87; p = 0.0006, Dr. Lackerbauer reported.

“With the 150-µm intended cut, the mean corneal flap thickness was 144  ± 34 µm (p = 0.47); with the 200-µm intended cut, 221 ± 38 µm (p = 0.14); with the 250-µm intended cut, 262 ± 30 µm (p = 0.097); with the 300-µm intended cut, 295 ± 45 µm (p = 0.665), and with the 350-µm intended cut, 374 ± 54 µm (p = 0.07),” he said.

“For lamellar keratoplasty, the Moria LSK-one microkeratome produces corneal flaps with high accuracy and reproducibility for all cut depths with respect to the intended flap thickness,” Dr. Lackerbauer concluded.