Hello It seems from the history that you are had an episode of sudden onset of blurred vision which lasted for few minutes and you had complete recovery. This indicates an episode of amaurosis fugax. The common causes are transient ischemia caused by causes like aura of migraine, retinal arterial obstructions, atherosclerosis of carotid artery diseases.... Hence I advice you not to ignore this and to consult your ophthalmologist for examination and appropriate treatment if required. Thank you.