Dry eye problem. Not working properly.

Doctor since few days I am facing problem in my left eye.past days I had some light infection/inflammation  in my  left eye, so doctor prescribed me two eye drops..... One for inflammation and other for dry eyes. Redness  went off after medication but still I feel some external particle(kachra) is inside my left eye, but I can't find anything, I feel dryness, uneasiness , sometime   pain on my eye brow as well. Recently I had visions test, my power got incrased to -1.25 ,so now continuously I am wearing spects also, for headache and any kind of uneasiness... But in my left eye I feel strain and, kind of dryness,.. Currently I am using just tears eye drop since week, prescribed by doctor ,but don't know that's not working properly.