What Causes Wavy Vision, Tingling In Arm With Ruptured Disc In Neck?

I am 57 year old male. Today after leaving a grocery store and getting into my vehicle, my vision became wavy and broken. If you can envision a TV screen, the upper left quadrant was the only part of my vision affected. I closed my left eye and it was there, and closed my right eye and it was there. My left arm began to tingle. I thought I may be having a stroke. I was only 5 minutes from home. I got home, carried three small bags of groceries inside. I stood next to my kitchen sink and didn't know what to do. finally after about 5 minutes it cleared up. I do have diabetes type II. I checked my blood sugar and it was fine. I have three ruptured discs in my neck. C4, 5 & 6. These discs are deforming my spinal cord and I am due for corrective surgery on March 24. What do you think may have caused this vision problem?