Ophthalmic surgery support device

An ophthalmic surgery support device for assisting an operator in an operation of a surgical instrument in order to position a tip end of the surgical instrument to be inserted in an eye through a wound opening formed in an eyeball of a patient to a fine location in the eye, the device comprising:

• a moving mechanism for holding the surgical instrument movably in a Z axis direction that is a longitudinal direction of the surgical instrument to be inserted in the eye;
• a tilting mechanism for holding the moving mechanism so that the surgical instrument is tiltable in an arbitrary direction about a predetermined point which is located on a Z axis and is positioned to the wound opening;
• and
• a tilt locking mechanism for locking tilt of the surgical instrument tilted by the tilting mechanism,
• wherein the tilting mechanism comprises:
• a rough-motion tilting mechanism;
• a fine-motion tilting mechanism providing a finer tilt range than the rough-motion tilting mechanism;
• a tilt switching mechanism for switching tilt of the surgical instrument by the rough-motion tilting mechanism to tilt of the surgical instrument by the fine-motion tilting mechanism;
• and
• a resistance imparting means for imparting resistance to make a tilting operation of the surgical instrument by the fine-motion tilting mechanism heavier than a tilting operation of the surgical instrument by the rough-motion tilting mechanism.