An intraocular lens structure for implantation in an eye of a patient has at least two intraocular lenses aligned along a common optical axis. Each of the intraocular lenses is provided with an optical compensation section adapted to correct an astigmatism with a linear orientation. A support retains each of the lenses for rotation about the common optical axis relative to one another when in an implanted state. The support may include a common haptic, or a separate haptic for respectively mounting each of the lenses together with a common ring for mounting each of the haptics to enable rotation of the lenses relative to one another after implantation. In the latter configuration, the common mounting ring has a pair of parallel grooves along an inner edge thereof for mounting the respective haptics therein for rotation of the lenses relative to one another. The lenses are provided with markings indicative of a preferred linear orientation thereof relative to one another about the axis when the lens structure is implanted. Each lens is composed of polymethymethacrylate (PMMA), silicone, hydrogel, or collapsible acrylate, and each optical compensation section has an optical cylindrical or torical effect.

A method of correcting optical aberrations and abnormalities within the optical system of an eye having an intraocular lens implanted therein. The method includes the step of measuring and determining the extent of the aberrations and abnormalities. Removing at least one removable component of the intraocular lens. Modifying at least one surface of the removable component to eliminate or correct the aberrations and abnormalities. Reinserting the modified removable component within the intraocular lens in the optical system through a same wound formed to originally implant the intraocular lens.

A supplemental intraocular lenses may be attached to conventional primary intraocular lenses using annular wrap-around clamps or adhesive or laser welding. New primary intraocular lens configurations have pockets for accommodating relatively small, supplemental intraocular lenses therein.

An adjustable ocular IOL/insert to be implanted during refractive cataract surgery and clear (human) crystalline lens refractive surgery and adjusted post-surgically. The implant comprises relatively soft but compressible and resilient base annulus designed to fit in the lens capsule and keep the lens capsule open. Alternatively the annulus may be placed in the anterior or posterior chamber. There is a second concentric annulus removably seated in the outer annulus. The second annulus has a threaded inner surface. A rotatable annular lens mount, bearing an appropriate lens, is threadedly engaged in the second annulus. The lens mount is rotated to move the lens forward or backward so to adjust and fine tune the refractive power and focusing for hyperopia, myopia and astigmatism. The intraocular implant has a power range of approximately +3.rarw.0.fwdarw.-3 diopters. The second annulus can be removed from the base annulus and lifted out of the eye so that the rotatable lens assembly can be changed, adjusted, modified or entirely removed with new assembly placed for the patient's changing visual needs and lifestyle with less stress on the base annulus and on the rotatable lens assembly.

A multi-part IOL which is insertable through an opening as small as about 1 mm without deforming the haptic, is described. This IOL may be used in the anterior chamber of the eye for phakic or aphakic lenses. After insertion of the haptic into the eye, any type of lens may be attached, especially by use of cleats. The haptic is a high modulus skeletal frame, and may be assembled with lower modulus material. An eyelet may be provided on the lens allowing a cleat on the haptic to firmly attach to the optic.