I was very impressed with the number of tests that are done by the MEI. Since I've had experience as an Aeromedical Specialist performing physical exams to AF pilots/navigators in the military back in the 60s, I did not realized that things had changed dramatically for the better. It's amazing what these eye specialists can do these days to check your eyes/vision. In addition, I like to thanks MEI for the sample of Refresh Optive solution for dry eyes. The drops have helped me see/feel better. Thanks MEI.