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  • Title: Visual function and vitamin A/zinc nutriture in patients with complaints of night blindness.
    Author: Hinck M, Hirons RR, Yolton DP.
    Journal: J Am Optom Assoc; 1984 Aug; 55(8):567-71. PubMed ID: 6332838.
    Abstract:
    Eighteen adults with night vision complaints showed significantly increased/final rod thresholds as compared to their age- and sex-matched controls. Vitamin A and zinc levels did not differ between the two groups. Vitamin A supplementation of three subjects produced changes in final rod thresholds and serum vitamin A levels. These changes did not produce subjective improvements in night vision.
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