Night blindness may come from a deficiency of this vitamin also called retinol
Early symptoms of Keratomalacia may include night blindness 
and extreme... [DOC] [TLE] Vitamin A Deficiency: Background, Pathophysiology, Epidemiology [PAR] Early observations by ancient Egyptians recognized that night blindness could be 
... Retinol, also known as preformed vitamin A, is the most active form and is... [DOC] [TLE] Vitamin A: MedlinePlus Medical Encyclopedia [PAR] Feb 2, 2015 ...