Marijuana

    A few hours after I smoked marijuana (I rarely do) about 3 months
  back I developed a severe headache with blurred vision.
  I have been suffering from blurred vision and daily headaches
  since then.
    I have seen a neurologist who found nothing wrong
  with me - my evoke potential (?) and CT scan are normal.
  His daignosis was a mixed migraine/tension headache.
  Except now it is chronic and daily - I have head/eye pain
  and blurred vision. It is especially hard to focus during reading,
   the letters seem to have halos around them.
  An opthalmologic evaluation was also normal.
   Can a one time smoking of pot cause such a terrible
  catastrophe ? Are there documented cases of such
  reactions ? Or was the event going to happen irrespective
  of my smoking pot ?
  

[HFHS M.D.-NI]

_
David,
As you know, smoking marijuana is illegal and cannot be advises.
I have not heard of long term problems with vision and headaches as you describe associated with occasional marijuana use.  Since you have seen an ophthalmologist and neurologist and have a normal CT scan, your symptoms are probably related to migranes (migraines).
You should maintain follow-up with your doctors.
This information is provided for educational purposes only.  Please consult your physician for diagnostic and treatment options.

Sincerely,
HFHS MD - NI