Text-book of ophthalmology . Descemets membrane. From the surface of the iris the iritic mem-brane, crossing the pupillary margin which is solidly adherent to the lens capsule, passesinto the pupil and closes it up (Figs. 166 and 167). The organized exudate often gluesthe periphery of the iris to the cornea and may also in places cover the posterior surfaceof the latter. The iris itself gets to be atrophic. It is thinner and its lax reticulate 414 TEXT-BOOK OF OPHTHALMOLOGY tissue is transformed into a rigid fibrillary connective tissue. The gracefully branchedchromatophores are in large part
Text-book of ophthalmology . Descemets membrane. From the surface of the iris the iritic mem-brane, crossing the pupillary margin which is solidly adherent to the lens capsule, passesinto the pupil and closes it up (Figs. 166 and 167). The organized exudate often gluesthe periphery of the iris to the cornea and may also in places cover the posterior surfaceof the latter. The iris itself gets to be atrophic. It is thinner and its lax reticulate 414 TEXT-BOOK OF OPHTHALMOLOGY tissue is transformed into a rigid fibrillary connective tissue. The gracefully branchedchromatophores are in large part changed to thick round cells filled with coarse pigmentgranules (Fig. 164). The blood-vessels have thickened walls of a hyaline appearance,and many are quite obliterated. The sphincter pupillae and the retinal pigment offerthe longest resistance to the atrophy. As an addendum to the description of the exudation in the region of the anteriorchamber, mention may be made here of the precipitates, although these do not occur at. Fig. 177.—Irido-cyclitis after Perforating Injury. Magnified 30 X cornea, C, and the sclera, S, are unchanged. Owing to the fact that the aqueous is rich infibrin, and hence is coagulated by the hardening fluids used, the anterior chamber, K, is filled with adense network of fibrin, in which lie isolated round cells (emigrated white blood corpuscles). Theseround cells are particularly numerous upon the surface of the iris, and above all in the sinus of the cham-ber; in fact, they fill the sinus completely, and form in it a low hypopyon which was visible in the livingeye. A marked cellular infiltration can be seen surrounding Schlemms canal and the cross sections ofthe anterior ciliary veins situated above the canal. The iris, /, appears broadened, as seen in crosssection, this appearance corresponding with the swelling which existed in the living eye. Its vessels aredilated, and are distended with blood. In its stroma, particularly in the posterior
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