A Treatise on the Operations for the Formation of an Artificial Pupil; In Which the Morbid States of the Eye Requiring Them, Are Considered (Paperback)

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1819. Excerpt: ... From a careful consideration of these different statements, we can I think, only come to the conclusion, that Cheselden attempted several ways of operating (as he did for the stone) and that the methods described by himself, Morand, and Sharpe, were perhaps those he followed at the different periods in which each wrote, or had an opportunity of seeing him operate; and t'he operation Sharpe recommends, is precisely the same as the one Sir W. Adams has since revived, save, that he did not repeat his incision in the iris. In consequence of the repeated failures of these methods, Janin proposed and performed another in the following"manner. "I opened two thirds of the cornea with Baron de Wenzel's knife, and then raised the flap with a curette held in the left hand, whilst I introduced under it, a pair of curved scissors, the lower branch of which was pointed; having plunged this into the iris about a line from its inferior edge, and on the side nearest to the great or nasal angle, I directed the point of the scissors upwards about half a line to the inside of the ancient pupil, and made my section by a single stroke; the wound forming an artificial pupil in the shape of a crescent, the convex part turned towards the temple, the concave towards the nose, being in length about two lines and a half." No accident supervened, and the lady the subject of the operation, saw extremely well with catarac t spectacles for four years afterwards, while she remained under his observation. Accident demonstrated to Janin the necessity of further varying the mode of operating. In the year 1768, a young peasant was brought to him 17 years of age, who had been blind 7 years, in consequence of a blow. On examination, Janin found., "That the iris was imperforated, the globe natur...