Dim vision in left eye /Blepharitis

Hello guys, Just want some opinions on what may be happening to me. I had some blurriness in my left eye, which was followed a few weeks later by stinging, dryness, etc. I have been diagnosed with demodex blepharitis, but there is something weird going on. I realised that my left eye with the higher dry eye symptoms had become deemed. Vision seems dull and foggy constantly. That eye used to be blurry but that has stopped. Just the constant dull vision.

Any idea what this may be? I don't know if it's a symptom of blepharitis or something different.