Affected by perivascular sheathing 4years ago(re).now it seems my vision is foggy and it started on left eye too.specialists in our city found nothing?

Retinal vasculitis: May cause perivascular sheathing or thickening of either the veins or arteries in the retina. Autoimmune vasculitis is a frequent concern. Any of these diseases can cause such inflammation which can damage the retina and cause permanent visual loss. A retina specialist who can conduct a Fluorescein angiogram can help. Also get TB test. Many autoimmune diseases have manifestations in the retina.