Vossius Ring
It is a well-circumscribed complete or incomplete ring of pigment deposition on the anterior lens capsule surface, usually as a result of significant blunt eye trauma.⠀ ⠀ ⏩It is a result of compression of the pigmented posterior iris epithelial cells or pupillary ruff against the anterior lens capsule with abrupt blunt force to the eye. Rupture of the cells causes deposition of a circular line of melanin pigment on the lens capsule.⠀ ⠀ ⠀ ✅The ring of pigment is generally the same diameter as the undilated pupil.⠀ ⠀ ✅Deposition of melanin and cellular debris, from ruptured iris epithelial cells in a concentric ring on the anterior lens capsule.⠀ ⠀ ⏩Diagnosis is made at the slit lamp by observing a complete or incomplete ring of pigment on the anterior lens capsule. The ring is seen most easily with a dilated pupil.⠀ ⠀ ✅It is asymptomatic and generally will improve or resolve with time.⠀ ⠀ ⏩No medical or surgical treatment is necessary, which is usually of little clinical significance but can be an important diagnostic tool if history of blunt trauma is in question.
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