Half open eyes to sleep for more reasons, roughly as follows: 1, there may be a relationship with fright, there may be a lack of security, more nervous, fear, emotional instability, etc., resulting in afraid to close the eyes to sleep; 2, there may be a relationship with facial neuritis, facial neuritis patients with local nerve damage, there may be a side of the face can not drum cheeks, raise eyebrows, eyes can not be completely closed symptoms, can be applied through the application of If there are symptoms such as tearing and pain, it may be related to conjunctivitis and should be treated with reasonable medication; 4.