A brown discoloration of the anterior capsule of the lens caused by mercury; early sign of mercurial poisoning.
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Once Hg has entered to the human body, and according to the ingested quantity, it causes different unfavorable effects in human health such as gastrointestinal diseases (increase in salivation, stomatitis, gingivitis, anorexia, nausea, vomiting, and diarrhea), respiratory diseases (rhinitis, anosmia, coughing, and fever), skin conditions (vesicular lesions and erythematous papular), and eye diseases (mercurialentis and constrictions in visual fields) [12], [13].