| 摘要 |
PURPOSE: To provide a fixation for an eyeball of making possible to fix a patient's eyeball by composing of that the cornea of eyeball is fixed against the sclera of the eyeball so as to project upward from a ring member, and the eyeball is adjusted to face toward a correct direction by using a ring member. CONSTITUTION: A ring member 18 has No.1 and No.2 circular opening portions 30, 32, and these opening portions have No.1 and No.2 interfaces 34, 36 for making contact with a sclera 14 of eyeball. The No.1 and No.2 circular opening portions 30, 32 have No.1 diameter portions 38 and No.2 diameter portion 40 respectively. The No.2 diameter portion 40 is larger than the No.1 diameter portion 38. The No.1 and No.2 interfaces 34, 36 are arranged upon a straight line with a certain interval, its fixing angle 39 is formed to be approximately 46 degree to 56 degree against the center line of the ring member 18. Thus, the No.1 and No.2 interfaces 34, 36 are composed so as to have preferable interface against the sclera 14 of an outer eye 16 of acornea edge 42. |
