An intraocular lens to be implanted in a human eye has a lens body 112 and a plurality of elongate lens body supports 114. The lens body has an anterior side 116 that in use faces outwardly of the eye and a posterior side 118 that faces inwardly of the eye. The lens body supports project from the lens body and are configured to permit fixing of the lens body onto the exterior of the capsular bag of the human eye, such that contraction or relaxation of the ciliary muscle acts on the lens body supports to apply a focussing force which deforms the lens body. The lens body supports may have hooks 126 to secure the lens around the periphery of the capsular bag. The lens body supports may be adjustable in length using a series of protrusions (244, see figure 6) and indentations 246.