How does the eye become good without spirit dull

How to improve the eyes without God dull, mainly depends on the following reasons: First, if often depressed spirit, emotional irritability, anxiety, stay up late for a long time, easy to cause the eyes to look dull. Mainly from the living habits to improve, must develop good habits, prevent staying up late, and to maintain good mood, relax mood, prevent anxiety, will gradually restore smart. Second, if it is caused by local reasons for the eyes, see things blurred, vision is low, need to wear glasses to correct vision, look at things will be much better. Third, if the body is weak due to physical reasons, be sure to strengthen exercise, enhance nutrition.