Preterm Babies Given Fatty Acids Have Better Visual Function
Preterm babies given a supplement with a combination of omega-3 and omega-6 fatty acids have better visual function.
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A University of Gothenburg study found that a supplement combining omega-3 and omega-6 fatty acids improved visual function in 178 extremely preterm babies by age 2.5. This supplement reduced ROP risk and enhanced both retinal and brain-based visual development, influencing global neonatal care guidelines.
- Omega-3 and Omega-6 Supplementation Benefits Preterm Babies' Vision: A University of Gothenburg study involving 178 extremely preterm babies revealed that a combination supplement of omega-3 and omega-6 fatty acids improved visual function by age two and a half.
- Study Shows Enhanced Visual Development Beyond Retina: The supplement, including AA and DHA, not only reduced the risk of retinopathy of prematurity (ROP) but also improved visual interpretation in the brain, leading to better visual development.
- Global Neonatal Care Implications: Lack of guidelines for fatty acid supplements to extremely preterm infants prompted revision based on this study, emphasizing the importance of nutrition for optimal visual and cognitive development.
Fatty acid supplementation
Preterm babies given a supplement with a combination of omega-3 and omega-6 fatty acids have better visual function by the age of two and a half. This has been shown by a study at the University of Gothenburg.
The study, published in The Lancet Regional Health Europe, covers 178 extremely preterm babies at the neonatal units of the university hospitals in Gothenburg, Lund, and Stockholm between 2016 and 2019. Extremely preterm babies are those born before the 28th week of pregnancy.
Around half of the children were given preventive oral nutritional supplements containing the omega-6 fatty acid AA (arachidonic acid) and the omega-3 fatty acid DHA (docosahexaenoic acid). Neither AA nor DHA are included in the supplements that are currently routinely given to extremely preterm babies immediately after birth.
The researchers have previously found that the combination supplement led to the risk of contracting the sight-threatening eye disease ROP (retinopathy of prematurity) being halved. The current study looks at children’s visual development at two and a half years of corrected age (i.e. age from the estimated date of birth).
Better visual interpretation in the brain
The study’s first author is Pia Lundgren, an associate professor in pediatric eye research at the University of Gothenburg’s Sahlgrenska Academy and a chief physician at Sahlgrenska University Hospital.
“The study shows that children who have received the combination supplement had improved visual function, regardless of whether or not they had previously had ROP,” she notes. “The improved visual development was thus not only due to the beneficial effect on the retina. The supplement also seems to have improved the brain’s ability to interpret visual impressions.”
The issue of nutrition and supplementation for extremely preterm babies is a highly topical issue within neonatal care in many parts of the world. Sweden currently lacks precise guidelines for administering fatty acid supplements to extremely preterm children, but the guidelines are now being revised – partly on the basis of the current findings.
Studying cognition and neurology
“Importantly, we can now demonstrate the positive effects that the combination supplement appears to have on visual development when the child is older,” Pia adds. “In the continued studies – on the same group of children – we will also look more closely at cognitive and neurological development, which will be particularly interesting.”
Reference: Lundgren P, Jacobson L, Gränse L, et al. Visual outcome at 2.5 years of age in ω-3 and ω-6 long-chain polyunsaturated fatty acid supplemented preterm infants: a follow-up of a randomized controlled trial. The Lancet Regional Health - Europe. 2023:100696. doi: 10.1016/j.lanepe.2023.100696
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