| 摘要 |
<p>An intraocular lens (10A) for placement in either the anterior chamber (24) or posterior chamber (28) of the eye (14) which employs a lens portion (12) intended for placement adjacent a side of the iris and at least one flexible appendage (76 or 78) extending from the lens portion (12) to the extreme periphery of the iris. To prevent endothelial touch the appendage (76, 78) is formed into a loop having a flattened or oval cross-sectional configuration in which the shorter dimension is oriented substantially normal to the optical axis of the lens (12). In this manner, any force directed at the end portion of the appendage (76, 78) cause it to spread laterally, generally normal to the optical axis of the lens (12) and pupil rather than vertically inwardly or outwardly in relation to the plane of the iris. The restricting flexing of the appendage (76, 78) also allows for variation in ocular sizes thereby reducing the number of precise different sized lenses needed at the time of surgery. The lens structure (10A) with its flexible appendages (76, 78) overcomes many common problems associated with prior intraocular lens such as post operative dislocation either anteriorly or posteriorly within the eye, uveitis, iritis, glaucoma and persisting eye tenderness.</p> |
