Hornhautmanifestationen bei Vitamin-A-Mangel

Abstract

Vitamin A, the fat soluble vitamin, must be supplied orally before resorption in the mucosa of the small intestine and storage in the liver. Vitamin A deficiency can cause alterations in the anterior segment of the eye, from Bitot spots, which are reversible, to irreversible keratomalacia. 5 patients suffering from manifestations at the cornea underwent ophthalmological, general and dermatological investigation and measurements of the vitamin A, retinol-binding protein and, in one patient, zinc were performed. 4 patients suffered from cornea manifestations, reaching from almost a reactive ulceration to spontaneous perforation. One patient had relapsing episcleritis. All patients were alcoholics, had hepatopathies and dermatological diseases. Vitamin A and retinol-binding protein were decreased and in one patient a highly decreased zinc was measured. In one patient a systemical and local substitution of vitamin A increased the clinical findings significantly. Two eyes had to undergo a keratoplasty à chaud, one evisceration had to be done. Vitamin A deficiency can be the reason for bilateral painless cornea manifestations. An interdisciplinary cooperation is essential for the elaboration of the diagnosis and the treatment.