Absolutely call your eye care doctor. My vision changed suddenly. I tried going the route of requesting an extra eye exam during a one-year period from my husband's vision plan. By the time I had filled out the necessary forms, had my family doctor vouch for the necessity of another exam (I am diabetic) and submitting it for DISapproval and entire month had gone by. I ignored all of that and just went ahead and made my own appointment. Thankfully, my ophthalmologist, got the ball rolling super fast and in the space of several weeks I have been able to see him, a surgeon and a specialist and will be getting treatment soon for my condition. All of this was a long way around telling you emphatically to make an appointment...good luck.
Hello afulk. The causes of sudden change in vision are too extensive to list. They run from a sudden blood clot to the eye which can blind the eye in 30 minutes to middle age eyes (Presbyopia).
JCH III MD