Supplementation with iron and riboflavin enhances dark adaptation response to vitamin A-fortified rice in iron-deficient, pregnant, nightblind Nepali women.

The article presents a study which examines the effect of supplemental riboflavin and iron on plasma retinol and pupillary threshold (PT) in nightblind, pregnant Nepali women taking vitamin A-fortified rice. Authors of the study measured erythrocyte riboflavin, hemoglobin, plasma ferritin and retinol before and after the intervention. Results showed that the deficiency in iron might limit the efficacy of vitamin A to normalize dark adaptation in pregnant Nepali women.