Ocular manifestation of vitamin A deficiency among Orang Asli (Aborigine) children in Malaysia
▪ Author : Nor F Ngah, Norhayati Moktra, Noor HM Isa, S Selvaraj, Md Shahrom Yusof, Halimah A Sani, Zainal AA Hasan, Rohani A Kadir
▪ Keyword : luxometer reading, Malaysia, night blindness, Orang Asli, Perak, vitamin A deficiency
▪ Content : 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.