Microsurgery in ophthalmology.

[Microsurgery in ophthalmology].

The use of operating spectacles goes back just over one hundred years; the first were simple presbyopic corrections, later increased to over-correction and later coupled with the use of base-in prisms. Magnification was increased by displacement on the nose to increase the back vertex distance. About 1880, the limited magnification available with a single lens was overcome by the use of compoun...

Tuberculin in Ophthalmology Tuberculin in Ophthalmology

Ophthalmology

This recent addition to the Clio Medica series is very welcome for several reasons. It is almost unique, for the only other histories of ophthalmology in English are a very short essay by Sorsby and an article by Shastid in the American Encyclopedia of Ophthalmology. The brevity of Chance's history has excluded a separate bibliography, yet the author has managed to include mention in the text o...

Ophthalmology.

Ophthalmology

?Myopia is an error of refraction, due to elongation of the-yeball, and its conditions vary with its degree. When it does n?t exceed four or five dioptres it is of little disadvantage, excePt to those who wish to enter the public services, or whose 0ccupations require particularly good far vision ; but as the amount increases, it causes more and more damage to the 'gnt, until in its high degree...