| 摘要 |
The invention contemplates structure for surgical implantation within an eye and providing the user with more than one focal length, for viewing at correspondingly different object ranges. In the embodiments disclosed, one intraocular device is relatively fixed in the eye to provide a conventionally available viewing range, for example, distance viewing, and another lens element is movably mounted with respect to the fixed distance-viewing lens in such manner as to provide its selective use in combination with the fixed lens, for close-object viewing. |
