Contact lens and method of manufacturing the same

Abstract

A contact lens and a method of manufacturing the same are provided. The contact lens includes a contact lens body and a blue light blocking material. The blue light blocking material covers the contact lens body. The blue light blocking material includes a plurality of metal particles dispersed on the contact lens body. The contact lens has good blue light blocking efficacy and surface properties.

What is claimed is: 
     
         1 . A contact lens, comprising:
 a contact lens body; and   a blue light blocking material covering the contact lens body, wherein the blue light blocking material comprises a plurality of metal particles dispersed on the contact lens body.   
     
     
         2 . The contact lens of  claim 1 , wherein the plurality of metal particles comprise silver, gold, cobalt, manganese, nickel, copper, zinc, platinum, palladium, cadmium, indium, potassium, calcium, iron, or combinations thereof. 
     
     
         3 . The contact lens of  claim 1 , wherein the contact lens comprises about 1 wt % to about 20 wt % of blue light blocking material based on a total weight of the contact lens. 
     
     
         4 . The contact lens of  claim 1 , wherein the plurality of metal particles have a diameter of about 1-10000 nm. 
     
     
         5 . The contact lens of  claim 1 , wherein the contact lens exhibits tunable plasmonic resonances at visible light ranged from 380-800 nm. 
     
     
         6 . The contact lens of  claim 1 , wherein the contact lens inhibits about 5% to about 99% of blue light at wavelength ranged within 380 nm to about 480 nm. 
     
     
         7 . The contact lens of  claim 1 , wherein the contact lens has an averaged water contact angle of about 30-70 degrees. 
     
     
         8 . The contact lens of  claim 1 , wherein the contact lens has an averaged hysteresis of about 0.1-35 degrees. 
     
     
         9 . The contact lens of  claim 1 , wherein the contact lens body comprises a hydrogel contact lens or a silicone hydrogel contact lens. 
     
     
         10 . The contact lens of  claim 1 , wherein the contact lens body comprises carboxyl, amine, hydroxyl, or pyrrolidone structure. 
     
     
         11 . A method of manufacturing a contact lens, comprising:
 providing a contact lens body; and   immersing the contact lens body with a reaction solution to form a contact lens having a blue light blocking material covering the contact lens body, wherein the reaction solution comprises:
 a solvent; 
 at least one compound comprising a metal ion; and 
 at least one reducing agent for reducing the metal ion into a metal particle. 
   
     
     
         12 . The method of  claim 11 , wherein the solvent comprises water soluble solvent. 
     
     
         13 . The method of  claim 11 , wherein the metal ion comprises silver ion, gold ion, cobalt ion, manganese ion, nickel ion, copper ion, zinc ion, platinum ion, palladium ion, cadmium ion, indium ion, potassium ion, calcium ion, iron ion, or combinations thereof. 
     
     
         14 . The method of  claim 11 , wherein the reducing agent comprises at least one functional group comprising carboxyl group, amine group, thiol group, sulfide group, aldehyde group, hydroxyl group, alkoxide group, N-heterocycle group, pyrrolidone group, borohydride group, or combinations thereof. 
     
     
         15 . The method of  claim 11 , wherein the reaction solution further comprises at least one hydrophilic-enhanced molecule functionalized with carboxyl group, amine group, thiol group, sulfide group, aldehyde group, hydroxyl group, acrylamide, alkoxide group, N-heterocycle group, pyrrolidone group, ethylene glycol group, or combinations thereof. 
     
     
         16 . The method of  claim 11 , further comprising:
 packaging the contact lens with a package solution, wherein the package solution comprises at least one hydrophilic-enhanced molecule; and   performing a sterilization process.   
     
     
         17 . The method of  claim 11 , further comprising performing a heating process at a temperature ranged from 25° C. to 135° C. when immersing the contact lens body with the reaction solution. 
     
     
         18 . The method of  claim 17 , wherein the heating process comprises heating a container accommodated the contact lens body and the reaction solution in an incubator for about 20 minutes to about 24 hours. 
     
     
         19 . The method of  claim 18 , wherein the incubator comprises an oven, an autoclave sterilizer, or a water bath incubator. 
     
     
         20 . The method of  claim 11 , further comprising:
 preparing a thermal responsive solution at a temperature below a lower critical solution temperature, wherein the thermal responsive solution comprises a polymer dissolving in a solvent;   immersing the contact lens with the thermal responsive solution; and   heating the thermal responsive solution to form at least one hydrophobic moiety on the contact lens body.   
     
     
         21 . The method of  claim 20 , wherein the polymer is functionalized with carboxyl group, amine group, thiol group, sulfide group, aldehyde group, hydroxyl group, acrylamide, alkoxide group, N-heterocycle group, pyrrolidone group, ethylene glycol group, or combinations thereof. 
     
     
         22 . The method of  claim 20 , wherein the at least one hydrophobic moiety consisting of carbon chain with alkane, alkene, or alkyne bonds. 
     
     
         23 . The method of  claim 22 , wherein the carbon chain is a polymer presented in liner or non-liner form comprising branched or cyclic form. 
     
     
         24 . The method of  claim 20 , further comprising:
 extracting the contact lens with an extraction solution;   performing a hydration process with a hydration solution; and   performing a sterilization process with a package solution, wherein at least one of the extraction solution, the hydration solution and the package solution comprises at least one hydrophilic-enhanced molecule.