. A treatise on the diseases of the eye. apsule and the cornea; the latter may even ulcerate and thelens escape through the perforation (Von Graefe).^ Severe inflammatory symptoms may also supervene, implicating the cornea,iris, and the deeper structures of the eyeball, and accompanied perhaps by anincrease in the intra-ocular tension. There is often also very severe periodicciliary neuralgia. But the inflammation may even extend sympatheticallyto the other eye. On the other hand, the lens may remain for a very longperiod in the anterior chamber without producing any irritation or pain. Disloc
. A treatise on the diseases of the eye. apsule and the cornea; the latter may even ulcerate and thelens escape through the perforation (Von Graefe).^ Severe inflammatory symptoms may also supervene, implicating the cornea,iris, and the deeper structures of the eyeball, and accompanied perhaps by anincrease in the intra-ocular tension. There is often also very severe periodicciliary neuralgia. But the inflammation may even extend sympatheticallyto the other eye. On the other hand, the lens may remain for a very longperiod in the anterior chamber without producing any irritation or pain. Dislocation of the Lens under the Conjunctiva.—This is always due to anaccident, generally to a heavy blow from some blunt substance, hitting theeye below, and knocking it forcibly against the roof or upper edge of theorbit, hence the most frequent seat of this displacement is upwards andinwards, or upwards and outwards. The rupture in the choroid generallyoccurs quite anteriorly, between or in front of the insertion of the recti [Fig. After Lawson.] muscles. The form of dislocation is most frequently met with in personsafter the age of thirty or forty, when the sclerotic has lost its elasticity. Itis characterized by the following appearances: Beneath the conjunctiva isnoticed a small, well-marked, prominent tumor [Fig. 182], which may evencause a little circumscribed prominence of the lid. The color of the tumorvaries, it may be dark from the presence of effused blood in and beneath theconjunctiva, or of a portion of prolapsed iris; or the conjunctiva may betransparent, and only slightly injected, and then the grayish-white lens can 1 A. f. O., i. 1, 343. COMPLETE DISLOCATION OF THE LENS. 487 be easily recognized. But in some cases only a part of the lens has escapedbeneath the conjunctiva, the rest remaining within the eye. Whilst thesclerotic has been ruptured, the conjunctiva, on account of its laxity andelasticity, has generally yielded before the lens, and has not give
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