Transactions . of the space where sharp sight yet remained. The man was a car-penter, accustomed to .make careful observations, and I chose a tooltith which he was familiar. An ordinary rule, with the foot-scale. clearly marked on it, was placed vertically on the blackboard withits upper half in the lost part in the field; it was then pushed slowly 339 towards the perfect part of tlie field until its right edge was justvisible, the remainder being in the blind part. The man then him-self remarked, that at or near the point of fixation, the entire widthof the rule was clearly seen ; and this po
Transactions . of the space where sharp sight yet remained. The man was a car-penter, accustomed to .make careful observations, and I chose a tooltith which he was familiar. An ordinary rule, with the foot-scale. clearly marked on it, was placed vertically on the blackboard withits upper half in the lost part in the field; it was then pushed slowly 339 towards the perfect part of tlie field until its right edge was justvisible, the remainder being in the blind part. The man then him-self remarked, that at or near the point of fixation, the entire widthof the rule was clearly seen ; and this portion was found to measurefrom above downwards 2|- inches. From the history of the case there is little doubt that four yearsago there was an apoplectic attack which induced the partial hemi-o[)ia, and that it was caused by a lesion of the left side of the traces of paralysis had long since disappeared, and there had beenno change since the first day in the condition of the eyes. The manwas intelligent and a good observer, and gieat care was taken to verifythe fact that at the fovea the blindness was not veitical, as it was bothabove and below. An autopsy is yet required to give the case value.
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectophthalmology, bookye
