True about Vossius' s ring is
During injury to eye a circular ring of faint or stippled opacity is seen on the anterior surface of lens due to brown amorphous granules of pigment lying on the capsule. This is known as Vossius&;s ring. It has the same diameter as that of contracted pupil and is due to impression of Iris on the lens produced by force of concussion injury which drives the cornea and iris backwards.
It is the ring around optic nerve
Synonymous with Soemmering's ring
Impression of miotic pupil on lens
Impression of dilated pupil on lens
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