Materials used in manufacturing of contact lens should have following properties:
1. It should be biologically inert it should not react with tissues it comes in contact with.
2. It should have high gas permeability.
3. It should have little friction effect between contact lens and eye tissues.
4. It should not change its properties when subjected to different pH.
5. It should not take part in enzymatic activities.
6. It should not absorb metabolites and toxins.
7. It should not show strong adhesive molecular forces.
8. It should not show excessive electrophoretic osmotic properties.
9. It should not excite inflammatory response even if it remains in contact with the tissue over a long duration of time.
Tags:
Contact lens