Your eyes are also the windows to your health. Indicators of pending health conditions drop clues in your eyes sometimes before they show up somewhere else. Systemic conditions such as diabetes, hypertension and inflammatory conditions such as Crohn's disease, colitis and lupus not to mention some forms of cancer leave clues your eye doctor can pick up without you saying a word. Genetic syndromes, nutritional and vitamin deficiencies, even signs of stress show up.
Annual eye exams that include dilation are important as we get older not just for getting an updated eyeglass prescription but also for monitoring your overall health.