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Arch Ophthalmol. 1999;117:537.

	Since this article does not have an abstract, we have provided the first 73 words of the full text and any section headings.

DAHLFELD'S experiments show that it is possible to discover the presence of foreign bodies in the eye by means of the X-rays; but that a negative result does not prove the absence of a foreign body, for this may lie in such a position as to be masked by the shadow of the orbital margin, and may be revealed only by placing the apparatus in a different position.

Reference: Arch Ophthalmol. 1898;27:140.