Conjunctivitis is about.

Is inflammation disease of external membrane transparent,covering eye, and inside eyelids cover, these are infection as virus, bacterial and allergy kinds.Infection is contagious as transferring to each other, as in hands touch, using common towels, virus is having in arvd, cold,angina,causing adeno viruses,as of streptococcus, staphylococcus, allergy conjunctivitis in contact with animals happening, herbs pollen, dust.
Symptoms are tearing, sand in eyes, itch,pus secretions, are sticky laches, light fear, edema eyelids, redness eyes, damaging one and other eye as in bacterial and virus kind, in allergy are both damaging, as in non curing, or complications are blepharitis, scars for conjunctiva, ceratitis, leucoma happening.
As doctor will test you on viruses kinds, micro organisms, and sensitiveness to remedies.A cure are immunity rising, on hard stages are anti allergy drops, cold compresses, hormonal ointments, as antibacterial  remedies.
Antivirus drops are interferon, and ointments.
Anti allergy are allergodil, betadrin, ifiral, sperasallerg, vyzine.
Anti bacterial are gentamicin, floxal, sulfacetamid, tetraciclin, levomicetine acos, cifran.
Anti virus are aciclovir, oftan idu.

As prevent infection are often hands to wash, not swim, not touch with hands are face, eyes, use individual towel, and towels for one time, avoiding touching other hands.