Are eyes bloodshot?

Is the eye bloodshot normal? The outer layer of normal eyeball is white sclera tissue, sclera surface covered with transparent bulbar conjunctiva, conjunctiva has blood vessels, blood vessel texture is clear, is usually said to be bloodshot. Normal bloodshot is sparse, if red bloodshot is rich, more, generally abnormal performance, is conjunctival congestion performance. Is caused by the following factors: 1, long-term use of eyes, stay up late caused by dry eye, visual fatigue; showing dry eyes, foreign body sensation, tears, conjunctival congestion. 2, do not pay attention to eye hygiene, rubbing eyes with hands, etc. caused conjunctivitis, showing foreign body sensation, conjunctival congestion. 3, conjunctival sac foreign body, trichiasis, conjunctival stones rub the eyeball, irritate the eyeball, showing foreign body sensation, tingling, conjunctival congestion. These are abnormal manifestations.