Lanterna Rally

Author: Jabez Hogg

Publisher: Theclassics.Us

Published: 2013-09

Total Pages: 34

ISBN-13: 9781230274690

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...eye, the letters form their images alternately on sensitive and insensitive parts of the retina, and thus come and disappear, sometimes with change of form, and in accord with the irregular displacement of the percipient elements Bonders). Mr. B. A., a tutor, myopic from childhood, on getting out of bed one morning, found to his horror that he had suddenly lost the sight of the right eye. A peculiar dense cloud appeared before every object, and he saw only a small portion of the window. It first occurred to him that his blindness must be due to cataract. The peculiar character of the obscuration of vision at this moment is represented at B, Jig. 20. Upon suddenly closing both eyes, a number of spots darker than any cloud appeared to fall over the pupil. In a strong light he was able to discern his hand if held very near to the temporal side of the head, but not otherwise. On assuming the erect position, this peculiar body almost disappeared. Soon after these pearly spectra gradually expanded into a spider-like body, represented at, fig. 20, and following the motion of the eyeball, either from right to left, or from above downwards, and then again it occupied the centre of vision. On a particular day, whilst lying perfectly still on the couch, a black inky-looking fluid proceeded from an ovoid body occupying a position at the top of fig. B; and on another occasion, the spectra became transformed into the crenated body c. On suddenly stooping, this again became transformed into the spectral body D. The space on either side of these several bodies was nearly a blank. After some weeks of medical treatment, the spectra suddenly vanished, and Mr. B. A. was able to read with--8 glasses, which quite neutralised his myopia. Before he consulted me, .