Several weeks ago I suffered vision loss in left eye.About 90% of my vision returned within a week or so.I also had eye pain, headaches, fatigue and rapid heart beat at night.I have used visine eye drops for years.I took a bottle of visine out of our camper and had been using them before this happened.Am not sure how long they had been in the camper.I have had lab work done, my thyroid is fine & MRI results were optic neuritis.I have an app. with a neurologist in Nov. Is it be possible eye drops could have caused these symptoms?