Osher-Neumann Corneal Marker

for radial keratotomy, 4.5 mm inner diameter, 4-1/4″ (11.0 cm) Osher-Neumann corneal marker is a commonly used preoperative tool during kerotomy procedures. The marker is used to mark surgical lines for eventual corneal extraction. The marker features either four, six, or eight blades to anchor the globe depending on surgical preference.