PROBLEM TO BE SOLVED: To provide an intraocular lens which can precisely and sufficiently exert focusing ability.SOLUTION: An intraocular lens 1 comprises a lens capsule tension device 10, and an elastically deforming optical part 20. The lens capsule tension device 10 comprises: a forward support part 11 which is disposed in contact with the inner face of an anterior capsule an aft support part 12 which is disposed on the rear side of the forward support part 11 in contact with the inner face of a posterior capsule while facing the forward support part 11 and a coupling part 13 which couples the forward support part 11 and the aft support part 12 in a state of having a bias force in a direction of separating the forward support part 11 and the aft support part 12. By the biasing force of the coupling part 13, the forward support part 11 presses the inner face of the anterior capsule, and the aft support part 12 presses the inner face of the posterior capsule. The curvature of the optical part 20 at a central part 21 changes in conjunction with movement of the coupling part 13 which brings the forward support part 11 and the aft support part 12 into approach or separation in accordance with movement of the lens capsule.COPYRIGHT: (C)2015,JPO&INPIT【課題】焦点調節力を精度よくかつ十分に発揮することができる眼内レンズを提供する。【解決手段】眼内レンズ1は、水晶体嚢拡張ディバイス10と、弾性変形する光学部20とからなる。水晶体嚢拡張ディバイス10は、前嚢の内面に接する態様で設けられた前方支持部11と、前方支持部11の後方側において前方支持部11と対向しながら後嚢の内面に接する態様で設けられた後方支持部12と、前方支持部11と後方支持部12を離間させる方向に付勢力を有する態様で前方支持部11と後方支持部12とを連結する連結部13とを備える。連結部13の付勢力により、前方支持部11が前嚢の内面を押圧するとともに、後方支持部12が後嚢の内面を押圧する。光学部20は、水晶体嚢の動きに応じた前方支持部11と後方支持部12との近接または離間させる連結部13の動きに連動して中央部21の曲率を変化させる。【選択図】図1
