Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The term “eye disease” refers to any disease of the eye or its related structures. While some of the eye problems are minor, curable and do not leave any long lasting effects, other diseases may lead to severe visual impairments or a permanent loss of vision. Medics remind that eye diseases do not always manifest their symptoms, therefore, regular tests are crucial to prevent vision loss. Learn more about common eye diseases, their causes, symptoms and treatments in this book.