A person who has sudden blurred vision needs to get medical help right away, because sudden blurred vision is one symptom of stroke, according to Healthline. In that case, the treatment ranges from everything from aspirin to intravenous tissue plasminogen activator to a decompressive craniotomy.
Sudden blurred vision is also a symptom of angle-closure glaucoma, and this is also a medical emergency, according to the Glaucoma Research Foundation. One treatment for this type of glaucoma is laser peripheral iridotomy, says Mayo Clinic. In this surgery, the physician uses a laser to punch a tiny hole in the patient's iris. This allows the aqueous humor to flow out and relieve the pressure on the eyeball.