MULTIFOCAL CORNEAL CONTACT LENSES

摘要

In a pair of multifocal contact lenses for a patient, each lens has a concave posterior surface and a convex anterior surface. The anterior surface is formed with power curve including a circular intermediate vision correction zone (18), an annular near vision correction zone (20) contiguous with the near vision correction zone. The near vision correction zone and the distant vision correction zone (22) are concentric or coaxial with the circular central correction zone.