[Treatment and prognosis of diplopia]

The case notes of 341 patients who had consulted the Ocular Motility Clinic of Hyogo College of Medicine between 1986 to 1992 with a chief complaint of diplopia were studied. The recovery rates of diplopia from major causes were as follows: 72% of patients recovered from diplopia in oculomotor nerve palsy, 70% in trochlear nerve palsy and 71% in abducens nerve palsy. Various treatments were effective to eliminate the diplopia in 69% of patients with myasthenia gravis, 60% in Graves' ophthalmopathy, 78% in blowout fractures and orbital tumors. Pharmaceutical therapy was applied in 236 cases. In ocular motor nerve palsy oral prednisone gave a higher recovery rate than other medicines. The recovery rate of diplopia in medicinal therapy was 60% and it increased to 69% when combined with surgical treatment. We concluded that it is better to select the surgical treatment if the patient complains of diplopia after more than 6 months of conservative therapy.