| 摘要 |
An ocular replacement system provides a ball-shaped implant body (20) having an outer spherical and porous surface (22) that is receptive to ingrowth of ocular tissue and including an anterior portion (24) positioned forwardly when the implant is fitted in the eye cavity (12) to create a convex tissue surface area when covered by conjunctiva (11). A prosthesis (30) includes an outer face and an opposite inner concave surface (36) shaped to conform generally to the convex tissue surface area. When fitted in the front orbital space of the eye cavity (12) and a magnetic attractive force between at least one magnet (46) on the inner surface of the prosthesis. One or more magnetically attractive elements (42) on the anterior portion of the implant couples the prosthesis (30) to the implant (20) so that the prosthesis (30) follows movement of the implant to simulate natural eye movement within the eye cavity (12). The magnets are offset relative to the attractive elements (42) to avoid direct alignment and excessive magnetic attraction, thereby reducing pressure which may cause tissue breakdown, infection, tissue dehiscence or implant extrusion.
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