Abstract
Diplopia occurring as a result of extraocular muscle limitation in patients with myasthenia gravis (MG), a fluctuating condition, varies with changes in the underlying neuromuscular disease. Other myopathic and dystrophic ocular conditions can mimic the ocular findings of MG but patients rarely complain of diplopia. MG has been reported to mimic certain internuclear or supranuclear gaze palsies. Conversely, those patients with gaze disturbances such as Parkinson's disease or Progressive Supranuclear Palsy (PSP) can resemble the findings in MG.