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2. Contact lens - Wikipedia

   en.wikipedia.org/wiki/Contact_lens

   Contact lenses, or simply contacts, are thin lenses placed directly on the surface of the eyes. Contact lenses are ocular prosthetic devices used by over 150 million people worldwide, and they can be worn to correct vision or for cosmetic or therapeutic reasons.

3. List of soft contact lens materials - Wikipedia

   en.wikipedia.org/wiki/List_of_soft_contact_lens...

   soft contact lenses; rigid gas-permeable (RGP) daily wear; extended wear; disposable; planned replacement contact lenses. The US Food and Drug Administration (FDA) defines soft contact lenses as: made of soft, flexible plastics that allow oxygen to pass through to the cornea.

4. Rimless eyeglasses - Wikipedia

   en.wikipedia.org/wiki/Rimless_eyeglasses

   Durability and stability. Because they lack frames, rimless glasses can sustain damage more easily than other eyeglasses designs; eyeglass labs throughout the United States report that consumers are two to ten times more likely to require new lenses in three-piece frames than any other eyeglass design. [4]

5. Rigid gas permeable lens - Wikipedia

   en.wikipedia.org/wiki/Rigid_gas_permeable_lens

   RGP lenses have various benefits over soft contact lenses, including better durability, clearer vision, and a lower risk of eye infections, claim Hashemi et al. (2019). However, they demand a lengthier adaption period and more specific fitting.

6. Polycarbonate - Wikipedia

   en.wikipedia.org/wiki/Polycarbonate

   Polycarbonate is a durable material. Although it has high impact-resistance, it has low scratch-resistance. Therefore, a hard coating is applied to polycarbonate eyewear lenses and polycarbonate exterior automotive components.

7. Effects of long-term contact lens wear on the cornea - Wikipedia

   en.wikipedia.org/wiki/Effects_of_long-term...

   Long-term use of PMMA or thick hydrogel contact lenses have been found to cause corneal warpage (shape distortion). There is some evidence to show that rigid gas permeable contact lenses are capable of slowing myopic progression after long-term wear.