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  • Title: Ocular manifestation of vitamin A deficiency among Orang asli (Aborigine) children in Malaysia.
    Author: Ngah NF, Moktar N, Isa NH, Selvara S, Yusof MS, Sani HA, Hasan ZA, Kadir RA.
    Journal: Asia Pac J Clin Nutr; 2002; 11(2):88-91. PubMed ID: 12074186.
    Abstract:
    This study determined the prevalence of ocular manifestation of vitamin A deficiency in Orang Asli (Aborigine) children. Night blindness was found in 16.0% of the children, conjunctiva xerosis in 57.3%, Bitot's spot in 2.8%, corneal xerosis in 0.5% and corneal scars in 5.6%. These findings show that history of night blindness had sensitivity, specificity and predictive value (positive) of 47.2, 98.1 and 96.2%, respectively, compared with the standard diagnosis procedure using luxometer readings.
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