The Method for Photochromic soft Contact Lens and Photochromic soft Contact Lens

摘要

The present invention relates to a photochromic soft contact lens and a method of manufacturing the same, and the first step of putting the agitated lens material into the lower mold, and the upper mold and the lower mold are compressed and put into a heat oven at 120° C. and polymerized for 60 to 90 minutes. The second step of separating the upper mold and the lower mold, and the third step of drying the lens pressed and seated on the upper mold to obtain a dry lens, and the outer pupil of the dry lens using a silicone pad coated with a color change dye. The fourth step of dipping and applying, the fifth step of additionally covering the coating liquid using a silicone pad coated with the coating liquid on the lens portion coated with the discoloration dye, and placing the lens covered with the coating liquid in a heat oven at 120℃ for 60 to 90 minutes After drying for a period of time, it is separated from the upper mold, obtained, hydrated in sodium chloride 0.9% by weight physiological saline for 20 to 25 hours, and then stored in a contact lens preservative solution.The discoloration dye is placed in the expected position of the pupil in the outer part of the soft contact lens. When exposed to sunlight through pad printing, the area becomes discolored and the color darkens, providing a comfortable view to reduce eye fatigue.Also, it is manufactured so that the discoloration dye does not come into direct contact with the eyes, thus significantly enhancing physical safety. It provides a good effect.