adjective, stupider, stupidest. 1. lacking ordinary quickness and keenness of mind; dull. 2. characterized by or proceeding from mental dullness; foolish; senseless: a stupid question. 3. tediously dull, especially due to lack of meaning or sense; inane; pointless: a stupid party.
On this page: Video on blurry vision causes â¢ When blurry vision is serious. Blurry vision is the loss of sharpness of eyesight, making objects appear out of focus and hazy. The primary causes of blurred vision are refractive errors â nearsightedness, farsightedness and astigmatism â or presbyopia.
1 Double vision can be caused by many eye conditions. In some cases, double vision also can signal an underlying health emergency such as a stroke. If you have a sudden onset of double vision, see your eye doctor or family physician immediately.  Sudden blurry vision in one eye.