<prompt> True about Vossius s ring isIt is the ring around optic nerveSynonymous with Soemmerings ringImpression of miotic pupil on lensImpression of dilated pupil on lens  <response>: 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. 