METHOD FOR MANUFACTURING OF COLOR CONTACT LENS COMPRISING FORMING FIRST POLYMER FILM, COLORING IRIS PORTION, FORMING SECOND POLYMER FILM AND SURFACE CUTTING WITH LATHE

摘要

PURPOSE: Provided is a method for mass production of contact lens which generates neither decoloration nor discoloration and has elevated oxygen permeability owing to reduction of the thickness of lens. CONSTITUTION: The method comprises the steps of injecting mixed monomer into bottom mold(80) primarily to form the first polymer film(83) in superthin film; forming iris coloring portion(86) on the upper side of the first polymer film; injecting the same mixed monomer with that in the first polymer film between the upper side of iris coloring portion and upper mold(90) to form the second polymer film(93); contacting the upper mold and glass(105) and irradiating the second polymer film with ultraviolet ray(110) to polymerize the second polymer film; releasing the upper mold and processing the surface of lens using lathe for cutting lens.