Supplementary intraocular lens system
AssigneeNestle S.A.
InventorAnilbhai S. Patel
Life of this patent
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Abstract
A supplemental intraocular lens is provided for either preoperative or postoperative attachment to a conventional implanted intraocular lens to provide an adjustable or removable multi-focal optic or to provide a necessary optic of spherical, cylindrical or combination shape for refractive error correction in aphakic patients. An intraocular lens system is also provided including a primary intraocular lens modified to provide for securing a supplemental corrective intraocular lens to the primary lens. Either the primary or supplemental lens could be formed of a suitable multi-focal lens, or both lenses could be mono-focal.
Claims17
An intraocular lens system, comprising:
- a. a primary intraocular lens formed of a biocompatible transparent material adapted to be implanted in an eye for replacing a removed natural lens;
- b. a supplemental intraocular lens formed of a biocompatible transparent material with a predetermined diopter power wherein the predetermined diopter power will alter the refractive power of the implanted primary intraocular lens to effect refractive correction and enhance the focusing ability and sized so as to be removeably insertable to a position complementary to said primary intraocular lens;
- and
- c. a means for selective connecting and disconnecting the supplemental intraocular lens to the previously implanted primary intraocular lens in situ without removal of said primary intraocular lens to form a composite intraocular lens with a refractive power different from that of the primary intraocular lens.
A composite intraocular lens, comprising:
- a. an implanted primary intraocular lens formed of a biocompatible transparent material having a first refractive power;
- b. supplemental intraocular lens formed of a biocompatible transparent material with a predetermined diopter power wherein the predetermined diopter power will alter the refractive power of said implanted primary intraocular lens to effect refractive correction and enhance focusing ability;
- said lens being sized so as to be removeably insertable to a position complementary to said primary intraocular lens;
- and
- c. a means for selective connecting or disconnecting the supplemental intraocular lens to the implanted primary intraocular lens while the primary intraocular lens remains implanted in the eye of a patient.
Dependencies are inferred from the claim text.