Hi,
Thank you for posting your query.
It is good to note that your eye and detailed neurological examinations have been normal. Also, normal funds examination as done by the eye doctor rules out any large 
tumor in the brain.
However, I have noted that you have symptoms such as pain and grinding of teeth.
It may be a good idea to start with symptomatic therapy such as 
ibuprofen or 
diclofenac tablets for pain relief. If there is no good relief in the short term, then, you may go for a brain scan such as 
MRI to exclude any internal problem.
I hope it helps. Please get back if you require any additional information.
Wishing you good health,
Dr Sudhir Kumar MD (Internal Medicine), DM (Neurology)
Senior Consultant Neurologist
Apollo Hospitals, Hyderabad, India
Click on this link to ask me a DIRECT QUERY: http://bit.ly/Dr-Sudhir-kumar
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