Contact lens is an artificial device whose front surface substitutes the anterior surface of cornea.
Types
Hard lenses : manufactured from polymethylmethacrylate
Rigid gas permeable lenses :
manufactured from copolymer of PMMA and silicone containing vinyl monomer
Soft lenses :
made of hydroxymethylmethacrylate
Hard Contact Lens Market is segmented by Type (Gas Permeable Lenses , Hybrid Contact Lenses and PMMA Lenses), by Application (Routine Myopia,, Hyperopia, Astigmatism , Presbyopic Designs , Ophthalmic Surgery and Dry Eye)and by Region (United States, Canada, Mexico, France, Germany, Italy, Spain, United Kingdom, Russia, China, India, Philippines, Malaysia, Australia, Austria, South Korea, Middle East, Japan, Africa and Rest of World)
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https://www.marketdecipher.com/report/hard-contact-lens-market