Dentist and Eye Doctor.

I went to the dentist and eye doctor recently . The dentist took X-rays of my teeth. They also cleaned them. The eye doctor asked me if I could read letters on a chart.

          D C
              y u f e j
                   l o r n t f i p 
                       w n j f y r i v j t
                              k j n h d u i g h b v h

like this one. Then he put different lenses on me and asked me what i could read again.