Method for making embedded hydrogel contact lenses
A method for producing embedded hydrogel contact lenses comprises at least the following steps: depositing a small drop of a viscous lens-forming composition in the center of a female lens mold half; placing a preformed insert on top of the small drop precisely in the center of the female lens mold...
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| creator | KOLLURU, CHANDANA SAMUEL, NEWTON T ZHANG, STEVE YUN GOBER, NICHOLAS NICULAS, CORNELIUS DANIEL BASSAMPOUR, ZAHRA BREITKOPF, RICHARD CHARLES |
| description | A method for producing embedded hydrogel contact lenses comprises at least the following steps: depositing a small drop of a viscous lens-forming composition in the center of a female lens mold half; placing a preformed insert on top of the small drop precisely in the center of the female lens mold half so that the insert is held by capillary forces due to the presence of a thin layer of the viscous lens-forming composition between the insert and the molding surface of the female lens mold half; dosing an amount of another less viscous lens-forming composition on top of the insert to immerse the insert in the female lens mold half; closing tightly a male lens mold half onto the top of the female lens mold half halves to form a molding assembly; curing both the lens-forming compositions in the molding assembly to form an embedded hydrogel lens precursor. |
| format | Patent |
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| language | chi ; eng |
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| subjects | CONTACT LENSES OPTICS PERFORMING OPERATIONS PHYSICS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPECTACLES SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL |
| title | Method for making embedded hydrogel contact lenses |
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