ACCOMMODATING INTRAOCULAR LENS

摘要

An intraocular lens includes a lens capsule expanding device and an optical portion. The lens capsule expanding device includes a front supporting portion to make contact with an inner surface of an anterior capsule. A rear supporting portion provided on a rear side of the front supporting portion makes contact with an inner surface of a posterior capsule while facing the front supporting portion. A connecting portion connects the front supporting portion and the rear supporting portion so as to have biasing force in a direction of separating the front supporting portion and the rear supporting portion from each other. Due to the biasing force, the front supporting portion presses the inner surface of the anterior capsule and the rear supporting portion presses the inner surface of the posterior capsule. The optical portion changes the curvature of a central portion according to movement of the connecting portion.

主权项

1. An accommodating intraocular lens inserted into a lens capsule from which contents are removed during an ophthalmic surgery, comprising:
a lens capsule expanding device; and an optical portion which is elastically deformable, the lens capsule expanding device comprising: a front supporting portion provided in such a manner as to make contact with an inner surface of an anterior capsule so as to pass light toward a rear side; a rear supporting portion provided on a rear side of the front supporting portion in such a manner as to make contact with an inner surface of a posterior capsule while facing the front supporting portion so as to pass light from the front side toward a rear side; and a connecting portion connecting the front supporting portion and the rear supporting portion in such a manner as to have biasing force in a direction of separating the front supporting portion and the rear supporting portion from each other, wherein due to the biasing force of the connecting portion, the front supporting portion presses the inner surface of the anterior capsule and the rear supporting portion presses the inner surface of the posterior capsule, and the optical portion is locked directly or indirectly to the connecting portion in such a manner that the optical portion is surrounded by the connecting portion of the lens capsule expanding device, and force is applied directly or indirectly from the connecting portion according to movement of the connecting portion when the front supporting portion and the rear supporting portion move in a direction closer to or away from each other with movement of the lens capsule whereby a curvature of the optical portion is changed.