“Eye inflammation causes?”

I'm 23 years old. I've had red eyes for a month and a half now, I've used Tobradex (Antibiotics/Corticosteroid mixture 0.1%) for a week, it successfully removed all my eye redness, but it came back again after a few days. I started another therapy after a week, he prescribed me Dexamethasone-Neomycin (antibiotics/corticosteroid mixture 0.1%), it brought down the inflammation after a week of use, not as good as the first time but it did its job. It again started to come back, I've treated it with home remedies for two weeks, kept it under check. But eventually, I visited the ophthalmologist again, and this time he recommended for me to use a clean corticosteroid this time (0.5%), twice a day. The first day, I've used it, it lowered the inflammation, but when I woke up the next day, my blood vessels in my eye were more enlarged than before, so I stopped using them immediately. He diagnosed me with Iridocyclitis the last time, he also said I have keratitis and Keratoconjunctivitis, he made me do some tests.

-Antinuclear antibodies were in normal range
-CRP: normal range
-Rheumatoid factor (RF): normal range
-Glucose: very slightly above range
-Monocytes: high above range
-HSV1: IGG antibodies (positive) | IGM (negative)
-Epstein barr: IGG (positive) | IGM (negative)
-Helicobater pylori: negative.

According to the tests that came back, what could be the cause of my red eyes?

Also, it's worth noting that I get red eyes during winter, once I went to the ophthalmologist in 2018 and diagnosed me with Conjunctivitis, I took eye drops he prescribed to me and they worked. The other winters my red eyes occurred they went away on their own after some weeks without medical treatment.

Also, I went to check my throat as it was dry when waking up, she said that she can see inflammation inside my throat and acid that travels all the way to sinuses, she didn't give me antibiotics yet and told me to gargle every day with baking soda. She diagnosed me with LRP (Laryngopharyngeal Reflux). She told me it could be due to Sjogren's, but I produce saliva and have no problems with saliva during the day. Also, negative ANA and CRP, so I want to get a second opinion on what could be the cause for my red eyes.