Plural form of anopsia; multiple instances or types of vision loss conditions characterized by absence of sight in specific areas or complete loss of vision.
Simple English pluralization of 'anopsia' (from 'an-' without + 'opsia' vision), allowing medical professionals to discuss multiple vision loss cases or varieties.
The fact that we have a specific plural suggests doctors encounter this condition often enough to need a convenient term—in medieval times, they'd just say 'the sickness of lost seeing,' but science needs precise language.
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