en_captions: There's an optometrist seated with his patient in front of a phoropter in his clinic, talking about contact lenses and its maintenance.  He explains what are the correct ways to put on contact lenses and also how to keep them clean.  A woman is demonstrating how to correctly wear lenses in the eyes as she takes the lenses out of the case.  Then the doctor also demonstrates how to correctly wear the lenses.  The optometrist continues to explain how to store the lenses in the case to increase its life and durability.