| 摘要 |
PROBLEM TO BE SOLVED: To improve the vision of a person who suffers from presbyopia by a simple structure.SOLUTION: A manufacturing method for a correction contact lens comprises: a lens material injection step A1 in which a lens material is injected into a mold for forming a contact lens; a masking step A2 in which a masking material is located on the injected lens material; a coloring agent fixing step A3 in which a coloring agent is fixed to the lens material, having the masking material as the center; the masking material removal step A4 in which the masking material is removed; and a cover step A5 in which a cover material is provided for the lens material so as to cover the coloring agent from which the masking material is removed. A diaphragm transparent portion in which the lens center is not colored by a coloring unit is formed. |
