How to determine the type of conjunctivitis

The type of conjunctivitis can be judged according to clinical symptoms and signs, but if the cause of conjunctivitis is /confirm/ied, laboratory tests, including cytological, etiological culture, immunological and serological tests, need to be known about epidemiological aspects. Generally speaking, bacterial conjunctivitis is more common conjunctival hyperemia edema, secretions present serous, mucinous or purulent, viral conjunctivitis, secretions generally present as watery or serous, but also normal combined with subconjunctival hemorrhage, follicle formation, pseudomembrane formation, preauricular lymph node swelling, tenderness, allergic conjunctivitis general secretions present viscous filiform, normal will be accompanied by nipple hyperplasia.