Crescent knife is designed to create a smooth scleral tunnel which facilitates wound healing in cataract surgery. The blade is sharp enough to prevents eyeball deformation .

R slit knife is designed to widen the initial incision to facilitate lens insertion.

MVR knife is designed to create precise microincision in vitrectomy.

Straight knife is designed to create a sideport incision in cataract surgery. It provides a strong point at initial stab incision.