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  • Title: [Acquired temporary night blindness in vitamin A and zinc deficiency in anorexia nervosa nine years after kidney transplantation].
    Author: Lengyel D, Török B.
    Journal: Klin Monbl Augenheilkd; 2006 May; 223(5):453-5. PubMed ID: 16705530.
    Abstract:
    BACKGROUND: Vitamin and trace element deficiencies may cause visual disturbances. Before starting a substitutional therapy, specific investigations should be performed. HISTORY AND SIGNS: We present a kidney-transplanted patient who suffered for 6 months from night blindness. The electroretinography showed a severe decrease of the rod activity. Except for an irregular pigmentation in the far periphery, the fundus appeared normal. These findings were indicative of a vitamin A and zinc deficiency. The laboratory tests showed decreased vitamin A and zinc serum levels. THERAPY AND OUTCOME: After three months of substitutional therapy the electroretinogram had normalized and the patient was free of symptoms. CONCLUSIONS: Visual disturbances due to vitamin and trace element deficiencies are rare in Europe. If suspected, since the diagnosis and the treatment of nutritional deficiencies are simple, specific investigations and a substitutional therapy should be initiated.
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