The chemistry behind contact lenses
You might place theses tiny and very complex items in your eye everyday, But what are they made of ?
The chemical composition of contact lenses is a very complex subject and for more detailled technical information it is worth reading a text on polymer technology.
Contact lenses are “giant molecule” polymers, that is, cross-linked chains of molecules. They are generally categorized as soft or hard, and often use silicone and/or various types of acrylic. At one time even a plastic derived from wood was used (CAB).