The Ophthalmic Yearbook Author:Unknown Author Purchase of this book includes free trial access to www.million-books.com where you can read more than a million books for free. This is an OCR edition with typos. Excerpt from book: mirror S, to the eye to be tested which is placed at U. The large mirror suspended from above is masked, and the other portions of the apparatus are contained in... more » a box, 30 by 20 by 23 cm. in size. Armaignac again calls attention to the two instruments he has previously described under the name autosynoptometer (Y. B. v. 4, p. 23). He has devised a number of new scales and figures to be used with them; and thinks they are convenient and valuable for testing acuteness of vision, comparing the vision of the two eyes, or detecting simulation. General Diagnosis.—While the diagnostic applications of Abderhalden's dialysis have attracted the attention of various ophthalmologists, and have received mention by Jendralski, Hegner, and Dutoit. no important results have been published other than those previously noticed (Year-Book vol. 10, p. 138). Discussing the symptomatology of ocular pain Morax classifies the different forms as follows: (1) Superficial pain including that attending affections of the lids and lacrimal apparatus; that of affections of the conjunctiva and cornea, in which there is a sensation of a foreign body; and the pain of iritis and cyclitis. (2) Deep pain, including that of hyper-tension, sup- purative inflammations of the eyeball, the tenderness of retro- bulbar neuritis; pain attending orbital disease, and that arising from the fifth nerve or gasserian ganglion. (3) Pain arising from certain neuropathic states, accompanied with free secretion of tears, and absence of other ocular disease. (4) The pain arising from eye-strain, including ophthalmic migrain. Schmerl has called attention to the diagnostic value of cuphthalmin as a means of dilating the pupil in elderly people. The dilatation occurs within one-half hour and passes off in eight hours. His claim...« less