The observations of the ophthalmologist are of invaluable aid in the diagnosis, treatment and prognosis of many systemic and neurologic diseases. This is particularly true in regard to examination of the eyegrounds and the perimetric fields. Although he could never hope to attain this enviable degree of diagnostic precision by external examination of the eye, certainly there are times when the external appearance of the eye and its adnexa will present some of the first evidences of a grave disorder.
In this category falls trichinosis, a most interesting parasitic disease which probably presents itself for diagnosis not infrequently. Because of its varied symptomatology trichinosis is, unless by chance, almost as frequently undiagnosed. This is evidenced by the comparatively few cases reported in the literature as against the observations of H. U. Williams,1 who in 505 autopsies in which the disease had not previously been suspected found 5.34 per cent