The eyes are more than a window to the soul–the eyes are a window to health and chronic disease throughout the body. Eyes can predict and confirm many chronic diseases. For instance, a retinal scan showing vessels in the back of the eye can predict the likelihood of a #heart attack, in the ensuing five years. The iris can show markers of metastatic cancer. Retinal vessels can show advanced stages of diabetes. A particular type of damage to the retina, including loose retinal epithelium and ICSR are an indication of stomach disease and stomach pathogens in the eye.

Specialization and the complete separation of ophthalmology from other medical specialties has limited knowledge of the importance of finding signs of chronic disease in the eye. The art of diagnosis by examining the eyes has become a lost art that should be revived.