I sympathize. I have similar symptoms. It is hard to know the exact cause but i would hazard a guess at repeates high-doses 2C-I due to a large phenethylamine tolerance
The night vision issues are dead on. Halos everywhere. Sometimes other car's lights and streetlights aremso bright i must look away. When it is pitch dark my vision is nothing but static, my depth perception is shot, and it is hard to distinguish where one object comes to an edge and another begins. During day i have visual snow, floaters, blurred vision, afterimages, and recetly blue blobs of light. It has been months since any psychedelic usage and effects have not improved. Mephedrone may have made my hppd worse