A method and related apparatus to treat a cataract where the cataractous lens is pierced and the resulting opening is mechanically maintained using a lens system device such as a pinhole device, expandable tubular lens, a stent or similar small diameter device, some of which are capable of supporting a secondary intraocular lens. The resulting passageway or lumen created in the cataractous lens allows visible light to better reach the retina, thus improving vision. This lens system device that can be placed into an in situ cataract provides for a much simpler surgical technique and reduces related pre and post operative procedures and potential complications. Intraocular lenses may also be used in concert with this invention. The apparatus and technique can be applied to humans as well as animals.