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Night Blindness
Definition 1
An inability to see clearly in dim light; due to a deficiency of vitamin A or to a retinal disorder. (NCI Thesaurus)
Definition 2
A disorder characterized by an inability to see clearly in dim light. (NCI Thesaurus/CTCAE)
Definition 3
Failure or imperfection of vision at night or in dim light, with good vision only on bright days. (Dorland, 27th ed) (NLM, Medical Subject Headings)
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