A corneal surgical apparatus for incising a cornea of a patient's eye in a layered form includes: a blade; a rotating shaft; a bearing rotatably supporting the rotating shaft; a transmitting mechanism which converts rotation of the rotating shaft about a rotation center axis into oscillation in a direction...http://www.google.de/patents/US6551336?utm_source=gb-gplus-sharePatent US6551336 - Corneal surgical apparatus