Advanced Eye Glasses (If your prescription changes, you don't need a new pair)

     Recently, my optometrist, or eye doctor, sent me this postcard as a way of reminding me I had an appointment coming up. It stuck out from the rest of the mail and gave me a good laugh. I hope it also gave you one too.


     The machine the boy has in front of his eyes is a phoropter, an instrument commonly used by eye care professionals during an eye examination. It contains different lenses used for refraction of the eye to measure an individual's refractive error and determine his or her eyeglass prescription.