an accommodative intraocular lens system is disclosed for insertion into an eye to provide accommodative vision , the system including a deformable air chamber filled with a transparent , low refractive index medium disposed between the first and second optics ; and at least one haptic connected to the air chamber and configured to facilitate a change in the curvature of at least one surface of the chamber , such that when the lens system is positioned in an eye , cilliary muscle movements can alter the curvature of the air chamber and vary the overall lens power of the system .