An intraocular lens (1) includes a lens capsule expanding device (10) and an optical portion (20) which is elastically deformable. The lens capsule expanding device (10) includes: a front supporting portion (11) provided in such a manner as to make contact with an inner surface of an anterior capsule a rear supporting portion (12) provided on a rear side of the front supporting portion (11) in such a manner as to make contact with an inner surface of a posterior capsule while facing the front supporting portion (11) and a connecting portion (13) connecting the front supporting portion (11) and the rear supporting portion (12) in such a manner as to have biasing force in a direction of separating the front supporting portion (11) and the rear supporting portion (12) from each other. Due to the biasing force of the connecting portion (13), the front supporting portion (11) presses the inner surface of the anterior capsule and the rear supporting portion (12) presses the inner surface of the posterior capsule. The optical portion (20) changes the curvature of a central portion (21) according to movement of the connecting portion (13) that moves the front supporting portion (11) and the rear supporting portion (12) closer to or away from each other with movement of the lens capsule.
