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We concur with the findings of Streib, Miilbourn, and Mitsunioto' that fibrillation potentials (FPs) are most. frequently found in paraspinal muscles in patients with polymyositis or dermatomyositis or both, and we wish to eInpliasize that the degree of electrical and histologic abnormality may be greatest in these muscles as well.

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Three cases of painful ophthalmoplegia have been described in which symptoms suggesting a tumor of the orbit justified neuroradiological assessment. Phlebography in each case revealed stenosis of the superior ophthalmic vein in its third portion, and non-opicification of the cavernous sinus. Hirtz incidences revealed contralateral cavernous sinus opacification and venous drainage through the coronary sinus. These neuradiological findings helped to differentiate this syndrome from other affections which have similar signs and symptoms.

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Six cases of retinal detachment from the macular hole were treated by a procedure including closed vitrectomy, air-fluid exchange, and prone positioning of the patient. All of these detachments were of the idiopathic type. Five patients had myopia ranging from -13 to -20 diopters; one was emmetropic. The initial success rate can be considered 100%: in all six cases the retina remained attached during follow-up periods ranging from 4-10 months at least. One later recurrence was not caused by the macular hole. This new technique, which allows permanent releasing of vitreous traction and temporary closure of the hole, shows that idiopathic retinal detachment is caused by vitreous traction.