What could be causing a sudden blurry vision in my left eye?

Blood flow. In your age group usually migraine aura, but need to rule out diabetes, and other medical conditions that can lead to temporary disruption of the blood flow to that eye. Or in that eye.
Optical axis. If the vision is truly blurry (fuzzy) and there are no other defects - loss of vision, etc, the problem is in the optic axis or much less likely the retina. Something is dispersing light rays as they pass through your eye. In any case this is academic - you need a thorough exam as sudden unilateral vision change may be associated with a number of unpleasant things.

Related Questions

Blurry vision in left eye and tension behind it. What could be the cause?

Many possibilities. This could be caused by many things. Only a thorough exam can determine whtat is happening in your particular case. See an ophthalmologist for this. Read more...

Hist. Of pituitary tumors. Has one removed 5/23/13. Sudden onset of blurry vision in left eye. See dr? What could cause this?

Yes. Definitely see your doctor. The optic nerves are adjacent to the pituitary gland. Changes in vision should prompt an eye exam as well as possible MRI imaging. Read more...
Yes, see your Dr. . The pituitary region is adjacent to the optic nerve. In fact, the surgery is done to keep the tumor from pushing against the optic nerve and causing visual problems. If you have new vision problems, you need to have it checked out particularly. Swelling of residual tumor, bleeding adjacent to the nerve are all considerations. Read more...

Can my toxoplasmosis have cause encephalitis? Blurry vision left eye, headache left side, convulsions, drownsiness, fatigue. What doc. Should I see. Pls

Toxoplasmosis . Yes toxoplasmosis can cause all the symptoms that you listed! see your neurologist for further evaluation. It can even affect your eyes. Read more...
An emergency room. If you're having seizures, you need to go to the emergency room and not wait for an appointment with a doctor. Read more...