Myasthenia Gravis is an organ-specific autoimmune disorder generaly thought to 
be caused by an antibody-mediated attack against the skeletal muscle nicotinic 
acetylcholine receptor (AChR) at the neuromuscular junction. Not infrequently 
there may be other diseases accompanying myasthenia, that can give different 
neuro-ophtalmological manifestations or neurological syndromes with autoimmune 
substrate. By these autoimmmune diseases we note:Autoimmune thyroiditis, 
Systemic lupus erythematous, Dermatomyositis, i.e. The extraocular muscle 
weakness is present at 90% of myastenia patients. While anti-AChR are detectable 
in the majority of patients with generalized myasthenia, at patients with ocular 
myasthenia these antibodies are nearly undetectable. On the another hand, 
epidemiological, clinical and immunoserological studies, suggests that the 
ocular myasthenia and generalized myasthenia are two separate disorders. Both 
Myasthenia Gravis forms could be associated with other autoimmune disturbances 
with ocular impact, for example such as Autoimmune thyroiditis Ophtalmopathy.