Text-book of ophthalmology . rized by hypersemia of the tissues and markedswelling, due to their serous infiltration, while—in contradistinction to plas-tic inflammation—exudates and the adhesions produced by them are want-ing. Accordingly, the symptoms of acute congestive glaucoma, so far as 500 TEXT-BOOK OF OPHTHALMOLOGY they affect the uvea, for example, differ greatly from the clinical picture ofan irido-cyclitis; posterior synechiae are only exceptionally observed in it,and exudations of greater degree, such as hypopyon, pupillary membranes,etc., are never observed. This absence of exudat
Text-book of ophthalmology . rized by hypersemia of the tissues and markedswelling, due to their serous infiltration, while—in contradistinction to plas-tic inflammation—exudates and the adhesions produced by them are want-ing. Accordingly, the symptoms of acute congestive glaucoma, so far as 500 TEXT-BOOK OF OPHTHALMOLOGY they affect the uvea, for example, differ greatly from the clinical picture ofan irido-cyclitis; posterior synechiae are only exceptionally observed in it,and exudations of greater degree, such as hypopyon, pupillary membranes,etc., are never observed. This absence of exudation, in spite of the violentexternal symptoms of inflammation, is, in fact, just the characteristic fea-ture of inflammatory oedema. 449. Objective Signs of Increased Tension.—The oedema due to in-creased tension finds different expression in the different portions of the eye: 1. The corneal cloudiness of glaucoma is an oedema of the cornea, as hasbeen proved by anatomical investigation. From this can be understood the. Fig. 215. Fig. 216. Fig. 215.—Iris and Ciliary Body in Recent Inflammatory Glaucoma. Magnified ciliary process, c, is so greatly swollen that it pushes the root of the iris forward and presses itagainst the sclera, <S, and the cornea, C. The sinus of the anterior chamber, which should lie some-what behind Schlemms canal, s, is thus closed. The ciliary muscle shows the pronounced develop-ment of the circular muscular fibers (Midlers portion), characteristic of the hypermetropic eye. Fig. 216.—Iris and Ciliary Body in Old Inflammatory Glaucoma. Magnified 9X1- Thedotted line gives the outline of the iris, Ii, and the ciliary body, a, in the normal condition. The rootof the iris is adherent to the sclera, S, and the cornea, C, wherever it has been pressed against themby the ciliary body. The attachment of the iris is hence displaced forward and lies in front ofSchlemms canal, s. So, too, the sinus of the anterior chamber is displaced from b to a
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