The polymer used for making contact lenses for eyes is
(a) polymethylmethacrylate(b) polyethylene
(c) polyethylacrylate (d) nylon-6
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Answer:
A is the correct option bro
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The polymer used for making contact lenses for eyes is polymethylmethacrylate.
Option (a).
Explanation:
- The first polymer which was used as a contact lens are polymethylmethacrylate (PMMA).
- It was used in early 1960.
- The prepared lens from PMMA is determined as Hard lenses.
- Hard contact lenses are produced with stiff plastic that are not mold to the shape of eye.
- PMMA is an durable and inexpensive and also easy to care.
- PMMA has optical properties which is developed as a lightweight and shatter-resistant alternatives to glass.
- PMMA does not allow oxygen but our front part of eye which is cornea need a significant supply of oxygen to stay healthy.
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