Related Experiment Videos
Visual functions in relation with neonatal cerebral ultrasound, neurology and cognitive development in
N Weisglas-Kuperus1, D J Heersema, W Baerts
1Department of Pediatrics, Sophia Children's Hospital, Rotterdam, The Netherlands.
Insights
Neonatal cerebral ultrasound and neurological exams in high-risk infants predict visual impairments and cognitive development. Early visual impairments may impact later cognitive outcomes, warranting further study on intervention effectiveness.
Area of Science:
- Pediatric Neurology
- Developmental Pediatrics
- Ophthalmology
Background:
- Very-low-birthweight (VLBW) infants are at high risk for neurodevelopmental deficits.
- Understanding the interplay between early brain injury, visual function, and cognitive development is crucial for timely intervention.
Purpose of the Study:
- To investigate the relationship between neonatal cerebral ultrasound findings, visual functions, neurological examinations, and cognitive development in high-risk VLBW children.
- To identify early markers of neurodevelopmental impairment in this vulnerable population.
Main Methods:
- A prospective longitudinal study of 69 high-risk VLBW children.
- Assessment of visual functions (visual acuity, visual fields, optokinetic nystagmus, strabismus) at 1 and 2.6 years corrected age.
- Neonatal cerebral ultrasound, neurological examinations, and cognitive development indices were evaluated.
Main Results:
- Visual impairments were present in 33% at 1 year and 28% at 2.6 years.
- Visual impairments correlated with intraparenchymal damage on ultrasound, abnormal neurological exams, and lower developmental indices.
- Neurological examinations were stronger predictors of neonatal cerebral damage than visual functions.
- Neurological examination at age 1 was key for cognitive development at ages 1-2, while visual functions at 2.6 years were more important for cognitive development at 3.6 years.
Conclusions:
- Early visual impairments in VLBW infants are associated with neonatal brain injury and impact later cognitive development.
- Standardized neurological examinations are valuable early markers for neonatal brain damage.
- Further research into early intervention for visual and cognitive development is recommended.
Abstract:
In order to determine the relationship between visual functions and neonatal cerebral ultrasound, neurological examinations and cognitive development, a prospective longitudinal study was conducted in 69 high-risk very-low-birthweight children. Visual development was studied at 1 and 2.6 years of corrected age by assessment of visual acuity, binocular visual fields, optokinetic nystagmus and strabismus. Visual impairments were found in 33% at age 1 and in 28% at age 2.6. Visual impairments were related to intraparenchymal damage, as detected by neonatal cerebral ultrasound, as well as to abnormal neurological examinations and lower mean developmental indices. A stepwise multiple regression analysis with neonatal cerebral ultrasound as the dependent variable and visual functions at ages 1 and 2.6 and neurological examinations at ages 1 and 2 as independent variables, however, demonstrated that standardized neurological examinations were better markers of neonatal cerebral damage than visual functions. In cognitive development at ages 1 and 2, the neurological examination at age 1 was the most important variable. In cognitive development at age 3.6, visual functions at age 2.6 were more important. Early visual impairments might thus influence later cognitive development. The effectiveness of appropriate early intervention strategies to stimulate visual and cognitive development in infants with less severe visual impairments should be subject to further study.