multifocal lens implant: a type of lens implant that contains several rings with a common center and adjusts for near or far vision; the eye is in focus for near and far vision simultaneously
lens implant: a clear plastic lens that is implanted in the eye; usually done when the natural lens has been removed in a cataract operation
blood coagulation: a process in which liquid blood is changed into a semisolid mass (a blood clot)