Partial or dimness of vision; a state of partial blindness or reduced sight.
From Latin caecutio, related to caecus (blind). This rare medical term describes a condition of impaired vision less severe than complete blindness.
This is an incredibly rare word that almost nobody uses anymore—it's been replaced by more modern terms like 'low vision' or 'amblyopia'—but it perfectly shows how medical language evolves and older terms fade away when better ones arrive.
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