What Causes Redness And Itching In The Eyes?

Hi.From april 2016 I was at ophthalmolog because my left eye was redd and itchy, so the diagnosed with conjctivis.i ve used for 2 weeks the drops that they prescribe mee but the reddnes and itch has never gone. At july I woke up and saw again the left eye red and itchy, I ve been again at doctor and they say that my both eyes are diagnoset with conjuctivis acute, I ve use the drops for another two week but the I feel the pain at lacrimal carousel when I look at mirrorr I se some red points around lacrimal carousel, when I move my eyelid I feel pain at lacrimal carousel. What can be this, it s been like 5 month that I go at doctor but they say that you dont have nothing.