Chronic recurrent conjunctivitis is not that common and there are usuallly unrecoginized CHRONIC causes like dry eyes, blepharitis, eyelid abnormalities, tear duct problems, (in people that continue to wear contact lens that is the cause 99% of the time), GPC (
giant papillary conjunctivitis), allergy to drugs or preservatives.
My suggest see a Eye MD that specializes in cornea/external disease. you need a tertiary referral specialist.