I know how you feel about eyes going blurry. When I use my scroll saw that happens to me and I mess up my cuts. Trying to look at small details for any lenght of time is difficult. Blinking real hard helps, but it's a pain in the butt!!!
Sorry to hear about your eye problem. Hope a "Real" pair of glass helps.
My husband uses those store bought readers because he leaves his perscription glasses lay around and the dog always chews them up. He lost at least 3 pair so far. So he buys the cheap dollar store glasses to save money. I don't think it's good for his eyesight, but I can't tell him anything.
It's best to get glasses from the eye doctor. Good luck!
Karen