What is the cause of red blood in white eyes?

Eye white eyeball has red blood, medically refers to conjunctival congestion, most commonly seen in conjunctivitis, can be divided into infectious conjunctivitis and immune conjunctivitis. Infectious conjunctivitis, most common pathogenic microorganisms are bacteria or viruses, so it is necessary to clarify the cause, according to the cause of choice of sensitive drug treatment. Antibiotics or antiviral drugs, mostly local drugs, frequent eye drops during the day, eye ointment before bed, severe symptoms can be combined with systemic drugs. Immune conjunctivitis, mostly allergic factors, once exposed to allergens, conjunctivitis will attack, so there are allergens to find. If you can identify allergens, and prevent contact, allergic conjunctivitis conjunctival congestion can be cured without treatment. If it is difficult to prevent contact, symptoms are more obvious, can be combined with anti-allergic eye drops point eye.