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Light reduction and the electroretinogram of preterm infants
K A Kennedy1, M A Ipson, D G Birch
1Department of Pediatrics, University of Texas Southwestern Medical Center at Dallas 75235, USA.
Summary
This study found that light-filtering goggles did not significantly impact retinal development or function in preterm infants. Further research with larger sample sizes is needed to confirm these findings for retinopathy of prematurity and infant well-being.
Area of Science:
- Neonatal ophthalmology
- Developmental biology
- Medical interventions
Background:
- Premature infants are at risk for visual impairments.
- Light exposure is a potential factor influencing retinal development.
Purpose of the Study:
- To assess the impact of light reduction on retinal development and function in preterm infants.
- To evaluate secondary outcomes including visual acuity and retinopathy of prematurity.
Main Methods:
- Sixty-one infants with birthweight < 1250g and gestational age < 31 weeks were enrolled.
- Infants were randomly assigned to wear 97% light-filtering goggles or serve as controls for at least four weeks.
- Electroretinograms (ERG) and visual acuity were primary and secondary outcome measures.
Main Results:
- No significant differences were found in ERG results at 36 weeks postmenstrual age between groups.
- Secondary outcomes, including visual acuity, retinopathy of prematurity, weight gain, and hospital stay, also showed no significant differences.
- The study was not powered to detect clinically significant differences in secondary outcomes.
Conclusions:
- The use of light-filtering goggles in very low birthweight infants is safe and feasible.
- Larger studies are required to determine the efficacy of light reduction in preventing retinopathy of prematurity and improving infant well-being.