| 摘要 |
<p>A two-piece anterior chamber artificial intraocular lens (1) for treating high myopia conditions by implantation in an eye after extracapsular removal of the natural eye lens, is disclosed. The lens includes a lens body or optic (2), and a separate ring shaped tension frame (12) therefor, containing light masking means for inhibiting light rays directed toward the outer edge portions of the lens body from being scattered thereby toward the retina after the assembled lens has been inserted into the eye. The lens body or optic (2) is generally smaller than the diameter of a pupil dilated for night vision, and is surrounded by a snugly fitting annular opaque or semi-opaque ring or frame (12) having a C-shaped cross section (12'), and a peripherally extending fin (12") of the same material. The fin (12") is preferably formed of flexible material which is bent during insertion to allow insertion of the two-piece assembly through a minimal size corneal incision. The lens (1) is also provided with position fixation means, such as haptic (3, 4), which are integrally formed with the lens body (2), and extend outward in the generally horizontal plane of the lens body for seating the lens in the eye. The ring shaped frame (12) is preferably mated with the lens during manufacturing.</p> |
