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Electroretinography in neonates treated with phototherapy
Insights
Phototherapy for newborns, when eyes are shielded, shows no harmful effects on retinal function. Electroretinographic (ERG) studies confirmed similar visual responses in treated infants and controls.
Area of Science:
- Ophthalmology
- Neonatal Medicine
- Neuroscience
Background:
- Neonatal jaundice is common and often treated with phototherapy.
- Concerns exist regarding potential adverse effects of phototherapy on infant vision.
- Electroretinography (ERG) is a key diagnostic tool for assessing retinal function.
Purpose of the Study:
- To evaluate the impact of phototherapy on retinal function in neonates.
- To compare electroretinographic (ERG) parameters between infants treated with phototherapy and a control group.
Main Methods:
- Electroretinographic (ERG) studies were conducted on 28 neonates post-phototherapy and 22 healthy controls.
- Funduscopy was performed to ensure normal ocular health in both groups.
- ERG assessed scotopic and photopic retinal function under dark- and light-adapted conditions.
Main Results:
- No significant differences were observed in the amplitudes of a and b waves between the phototherapy and control groups.
- Routine funduscopy revealed normal results in all infants studied.
- Phototherapy did not demonstrate deleterious effects on either photopic or scotopic retinal function.
Conclusions:
- Adequate eye shielding during phototherapy appears to prevent adverse effects on neonatal retinal function.
- ERG findings suggest that phototherapy is safe for retinal function in neonates when eyes are properly protected.
Abstract:
Electroretinographic (ERG) studies were performed in 22 normal control newborns and 28 neonates who had had phototherapy during the first few days of life. Mean age at ERG testing was 16.8 +/- 2.9 days in the phototherapy group and 16.4 +/- 3.7 days in the control group. Results of routine funduscopy were normal in both groups. Amplitudes of a and b waves under dark- and light-adapted states were similar in both groups. Phototherapy did not appear to have deleterious effects on photopic and scotopic retinal function in infants whose eyes were adequately shielded.