Abstract: Microkeratome for surgery of the cornea, comprising a securing ring (1) which includes, on an upper surface, a slide (8), and a blade carriage (10) equipped in the lower part with guide means (13) for cooperating with the slide (8), the ring including a maneuvering grip, the blade carriage (10) including a front section (12) forming a plateau (16) for flattening the cornea, in which the ring (1) and the carriage (10) include abutments (17, 18) for regulating the end of slide position of the carriage (10) in relation to the ring (1).