Binocular lens systems

摘要

An ophthalmic lens system for improving the vision of a patient is provided. The system comprises two intraocular lenses. The first intraocular lens is for use with one eye of the patient and has an optical axis and first, second and third optical zones arranged radially with respect to the optical axis. The second zone is intermediate the first and third zones and has a greater add power than either of the first and third zones. The maximum add power of the first intraocular lens is no greater than about 1.75 diopters. The second intraocular lens is for use with the other eye of the patient and has an optical axis and first, second and third optical zones arranged radially with respect to the optical axis of the second lens. The second zone of the second lens is intermediate the first and third zones of the second lens and has a greater add power than either of the first and third zones of the second lens. The first lens provides better visual acuity for objects at infinity than the second lens and the second lens provides better visual acuity from intermediate to near distance than the first lens.