What is the evidence that addition of DHA and ARA to infant formulas is beneficial?

The scientific evidence is mixed. Some studies in infants suggest that including these fatty acids in infant formulas may have positive effects on visual function and neural development over the short term. Other studies in infants do not confirm these benefits. There are no currently available published reports from clinical studies that address whether any long-term beneficial effects exist.

Source: FDA/CFSAN Office of Nutritional Products, Labeling and Dietary Supplements July 2002