Red and bloodshot eyes may be related to eye fatigue, conjunctivitis, high blood pressure and other factors. 1. Eye fatigue: due to lack of sleep or long time playing cell phone and watching computer, which leads to excessive use of the eyes, and then appear red and congested eyes. 2. Conjunctivitis: Inflammation of the blood vessels in the conjunctiva due to bacterial, viral, allergic and other stimuli, manifesting as redness and congestion of the eyes, as well as swelling. 3. Hypertension: High blood pressure causes kidney filtration dysfunction, so that the kidneys can not properly filter body fluids, so that excess body fluids are stored in the face and around the eyes, and the pressure on the eye tissues leads to redness and congestion of the eyes. If you have redness and congestion in the eyes, it is recommended to go to the hospital in time to identify the cause and carry out targeted treatment. Pay attention to healthy eye use and avoid overuse of the eyes.