I desire to report an interesting case having a total apparent strabismus—convergent—of 62°; with a view to demonstrating a method for this individual case by Professor Landolt, of Paris. From my clinical notes, taken at the time (1886), I present the following: A young man, 19 years of age, applied for treatment, "for loss of vision in the right eye." Ophthalmoscopic examination revealed:
Right and left eyes, hyperopia total, 3.5 D.
Right eye, convergent strabismus apparent, 52°.
Angle K (angle between the lens of fixation and the radius of the cornea, which passes through the pupil) +10°.
Therefore we have a case with a total convergent strabismus of 52°+10°=62°, an exceptionally high degree. The field of fixation, measured with Landolt's perimeter, was:
It will readily be observed that the field of fixation is strongly limited to the outer side of both eyes. Binocular vision abolished, it was found impossible to
MEANY WB. CONVERGENT STRABISMUS. A CASE, OBSERVED IN THE CLINIC OF DR. LANDOLT, MEASURING 62°, AND ITS MANAGEMENT. JAMA. 1900;XXXIV(7):400–401. doi:10.1001/jama.1900.24610070016001h
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