Vision blurring or doubling in one or both eyes creates confusion and hazard. This visual sign a month before a stroke can occur temporarily in TIAs.
Eye strain seems the easy explanation.
But it’s a common precursor according to reliable sources.
Spotting this sign a month before a stroke early matters greatly.

Weakness or Numbness on One Side
Sudden weakness or numbness in the arm, leg, or face—especially one side—feels frightening. This classic sign a month before a stroke reflects interrupted brain signals.