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December 1931


Author Affiliations

New York
From the Herman Knapp Memorial Eye Hospital.

Arch Ophthalmol. 1931;6(6):919-920. doi:10.1001/archopht.1931.00820070950009

In cases of intra-ocular foreign bodies which perforate the globe through the sclera, one would expect to find more or less hemorrhage under the conjunctiva at the site of penetration. The bleeding comes from the lacterated vessels of the conjunctiva, of the episcleral layers and of the choroid. Less frequently, when the foreign body is small and sharp and travels with great speed, perforation of the eyeball is effected without subconjunctival bleeding. In such an event the examiner is deprived of a valuable sign in the localization of the wound, and he may even experience considerable difficulty in finding it, for a small opening in the conjunctiva and episclera is quickly effaced by the reparative processes of the tissues. When a large foreign body strikes the eyeball, there is less likelihood of penetration, but there is great probability of a subconjunctival extravasation of blood from the contusion.

When the foreign

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