What will Cleer's doctor prescribe for her cough, aches and pains?

When a sick Cleer calls to set up a doctor's appointment, the receptionist is less than enthusiastic to assist her.

Mauricio Cordoba, a licensed optometrist from Otavalo, Ecuador, gives us some useful tips about how often to get our eyes checked, what to keep in mind when purchasing glasses, etc.

To carry out the "disappearing coin" experiment, one only needs a container with water, a metal glass and a coin. Witness it here!