Patients with eye pain and red bloodshot eyes may be caused by overuse of eyes, conjunctivitis, dry eye and other reasons. 1. Excessive eye use: If patients watch cell phones, computers and other electronic products for a long time, which produces strong stimulation of the eyes, it may lead to pain in the eyes of patients, and red blood. 2. Conjunctivitis: increased redness in the patient’s eyes may be caused by conjunctivitis, due to inflammation and irritation leading to eye pain and redness, which may be accompanied by increased secretion, itching and other discomfort. 3. Dry eye: dry eye patients because of the eyes of the basic tear secretion is insufficient, the lack of tears in the conjunctival sac moisturizing, resulting in a series of eye discomfort symptoms, such as pain, red blood, and so on. In normal life, patients should avoid looking at electronic products for a long time, pay attention to appropriate rest, if the eye discomfort is obvious patients can consult a doctor in a timely manner to assess the condition, follow the doctor’s instructions for treatment.