Many people do not realize that a comprehensive eye exam involves checking more than just vision and determining a prescription for glasses or contact lenses. During an eye exam, optometrists screen for many detrimental eye diseases that have no apparent symptoms, as well as can diagnose a variety of other medical conditions by thoroughly examining the eyes. There are many reasons why our optometrists recommend that seniors, or those over the age of 65, should have annual eye exams. In Alberta, the province provides yearly coverage for routine eye exams for senior citizens.