Description
Soft contact lenses are made of plastic, but not the type of plastic used in garbage bags or paper plates. Instead, soft lenses are made of hydrophilic plastics – a special type of water-absorbing plastic that stays soft and moist as long as it is absorbing lots of water.
If you wear soft contact lenses, you’ve likely noticed the way this plastic works. If your lenses get dried out, they become brittle to the point where they could even break. As long as that plastic stays nice and wet either inside your eye or in a case, the plastic stays pliable and soft.
To your eyes, this soft flexibility spells comfort! When your eyes are dry, your lenses will begin to feel uncomfortable because they depend on moisture to keep them in place and pliable.
Soft contact lenses are categorized by the amount of water they contain. They can be classified as either high water or low water
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