Related Experiment Videos
Ambient light, ophthalmic artery blood flow velocities and retinopathy of prematurity
W Baerts1, M Wildervanck de Blécourt-Devilee, P J Sauer
1Department of Pediatrics, Erasmus University/Sophia Children's Hospital, Rotterdam, The Netherlands.
Insights
Bright light exposure is not linked to retinopathy of prematurity. Doppler ultrasound of preterm infants
Area of Science:
- Ophthalmology
- Neonatology
- Perinatal Medicine
Background:
- Retinopathy of prematurity (ROP) is a significant cause of visual impairment in premature infants.
- Exposure to bright light has been hypothesized as a potential risk factor for ROP development.
Purpose of the Study:
- To investigate the relationship between ophthalmic artery blood flow velocities, ambient light conditions, and the incidence of retinopathy of prematurity in preterm infants.
- To assess the impact of varying light intensities on ocular blood flow in premature neonates.
Main Methods:
- A semi-longitudinal Doppler ultrasound study was performed on 22 preterm infants.
- Ophthalmic artery flow velocities were measured at post-menstrual ages ranging from 28 to 37 weeks.
- Measurements were taken under both normal and increased ambient light conditions.
Main Results:
- Ophthalmic artery blood flow velocities showed a gradual increase with post-menstrual age (28–37 weeks).
- A distinct increase in flow velocity was observed in all infants when ambient light intensified.
- Five out of 22 infants developed retinopathy of prematurity.
Conclusions:
- No significant association was found between ophthalmic artery flow velocities, light-induced flow velocity changes, and the development of retinopathy of prematurity.
- The study did not support the hypothesis that bright light exposure is a risk factor for ROP in this cohort.
Abstract:
Exposure to bright light was recently proposed as a possible risk factor for the development of retinopathy of prematurity. A semi-longitudinal Doppler ultrasound study was conducted of ophthalmic artery flow velocities at normal and increased ambient light in 22 preterm infants, at post-menstrual ages from 28 to 37 weeks. The aim of this study was to obtain relationships between ophthalmic artery blood flow velocities at various post-menstrual ages and lighting conditions and the occurrence of retinopathy of prematurity. A gradual increase in average blood flow velocities was seen between 28 and 37 weeks. A stepwise increase in flow velocity was seen in all cases when ambient light was increased from moderate to intense. Five of the 22 infants developed retinopathy. No association could be established between ophthalmic artery flow velocities or light-induced changes in flow velocity and the occurrence of retinopathy.