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Visual impairment in very low birthweight children
Summary
Very low birthweight (VLBW) children show poorer visual function compared to peers. Impaired vision in VLBW children is linked to neurodevelopmental outcomes, highlighting the need for enhanced screening.
Area of Science:
- Ophthalmology
- Developmental Pediatrics
- Neuroscience
Background:
- Very low birthweight (VLBW) infants are at increased risk for visual impairments.
- Long-term neurodevelopmental outcomes in VLBW children require comprehensive assessment.
- Early identification of visual deficits is crucial for intervention.
Purpose of the Study:
- To compare visual function in early adolescence between VLBW children and normal birthweight controls.
- To correlate visual impairment in VLBW children with perinatal factors.
- To examine the relationship between visual ability and cognitive/motor skills in VLBW children.
Main Methods:
- A cohort of 137 VLBW children and 163 controls (ages 11-13) underwent visual assessments.
- Evaluations included visual acuity, stereopsis, contrast sensitivity, strabismus, and eye movement disorders.
- Standardized tests assessed motor and cognitive skills; perinatal data were reviewed.
Main Results:
- VLBW children exhibited poorer visual function across all measures compared to controls (63.5% vs. 36% impaired).
- Poor contrast sensitivity and strabismus predicted poorer motor skills; poor contrast sensitivity and visual acuity predicted lower IQ.
- Perinatal factors like low birthweight, intraventricular hemorrhage, and low Apgar scores predicted reduced visual function.
Conclusions:
- VLBW children have a high prevalence of visual impairment.
- Stereopsis and contrast sensitivity testing are valuable additions to screening for VLBW children.
- These measures detect visual deficits missed by standard screening and correlate with neurodevelopmental outcomes.