I want to know something about iridology. How can you tell from your eyes whether you are sub-healthy?

Hello! The eyes are the windows of the soul, through which you may not see your health. Borrowing an ophthalmic anatomy book from the library can help you understand the basic knowledge of iris. Sub-health is an "intermediate state" between disease and health. That is, the state of fatigue and weakness that excludes the cause; The relationship between health and disease or pre-disease state; The imperfect state of physiology, psychology, social adaptability and morality; A declining state of tissue structure and physiological function that is not commensurate with age. Sub-health can be divided into: 1, physical sub-health. The main manifestations are physical fatigue, weakness, general malaise, sexual dysfunction and menstrual cycle disorder for unknown reasons or excluding diseases. 2. Mental sub-health. Mainly manifested as unexplained mental fatigue, emotional disorders, thinking disorders, panic, anxiety, inferiority, tension, indifference, loneliness, impatience, and even suicidal thoughts; 3. Sub-health of social adaptability. Outstanding performance is that it is difficult to adapt to work, life, study and other environments, and it is difficult to coordinate interpersonal relationships, that is, role dislocation and inadaptability are the concentrated manifestations of social adaptive sub-health; 4. Moral sub-health. Mainly manifested in the world outlook, outlook on life and values, there are obvious deviations that harm others and do not benefit themselves. Sub-health prevention and control: 1, eliminating excessive tension and pressure; 2. Improve bad lifestyles and habits; 3. Reduce the adverse effects of environmental pollution; 4. Avoid bad mental and psychological factors.