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 Hyphema

       Hyphema is the presence of blood in the anterior chamber. 

      Tiny hemorrhages may be visible only with the slit lamp, in the form of erythrocytes floating and circulating in the aqueous humor. 

       Slightly larger amounts of blood settle as variously shaped masses on the surface of the iris, lens, or vitreous. 

       Still larger hemorrhages gravitate to the inferior aspect of the anterior chamber, producing a grossly visible, "layered" Hyphema. 

        The most severe hemorrhages can fill the anterior chamber; these tend to clot, probably because of impaired circulation of aqueous, and nearly always produce glaucoma. 

       Total, clotted Hyphema are dark brown, purple, or black and are referred to as "black-ball" or "eight-ball" hemorrhages

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