Cornea marker

Surgical apparatus for concentric placement on the cornea of the eye and for radially marking selected meridians of the corneal surface surrounding the central clear zone of the eye, comprising:

• a planar blade assembly holder plate having a central opening and a concentric circumferential bearing surface, for engagement with the bearing surface of a rotary knife blade assembly,
• a rotary knife blade assembly including a planar circumferential support frame having a central opening dimensioned for concentric alignment exposing the clear zone, and a pair of diametrically opposed co-planar radially disposed knife blades for each of said selected meridians, each blade having a cutting edge with concave curvature adapted in profile for co-extensive matching contact with the convex curvature of the outer corneal surface, and each blade further being unitary with and supported on the support frame, the assembly being configured with a circular peripheral bearing surface engaging said concentric bearing surface by a snap fit allowing rotation of the assembly planar frame in parallel relation with respect to the planar blade holder plate.