<prompt> Voissius ring is seen in the -CorneaAnterior capsule of the lensPosterior capsule of the lensIris  <response>: Vossius ring: It is a circular ring of brown pigment seen on the anterior capsule. It occurs due to striking of the contracted pupillary margin against the crystalline lens. It is always smaller than the size of the pupil. Ref : AK Khurana 6thE pg 430 