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Cerebral visual impairment in periventricular leukomalacia
1Department of Child Neuropsychiatry, IRCCS C. Mondino Foundation, University of Pavia, Italy.
Neuropediatrics
|August 26, 1998
Summary
Cerebral visual impairment (CVI) is common in infants with periventricular leukomalacia (PVL). Brain MRI findings correlate with visual acuity, aiding diagnosis and treatment for affected children.
Area of Science:
- Neuroscience
- Ophthalmology
- Pediatrics
Background:
- Cerebral visual impairment (CVI) is prevalent in infants with cerebral palsy (CP), often stemming from retrochiasmatic pathway damage.
- Periventricular white matter damage, particularly periventricular leukomalacia (PVL), is a significant contributor to CVI in this population.
Purpose of the Study:
- To correlate binocular visual acuity with neuroradiological findings in preterm infants diagnosed with PVL.
- To investigate the relationship between specific MRI findings and the degree of visual impairment in children with PVL.
Main Methods:
- Thirty-eight preterm infants with PVL (diagnosed by MRI) were assessed.
- Binocular visual acuity was measured using Teller Acuity Cards.
- Complete ophthalmological examinations and brain MRIs were performed to evaluate optic radiations and calcarine cortex involvement.
Main Results:
- Twenty-three infants (66%) exhibited visual impairment, with 9 (26%) being nearly blind and 14 (40%) having low vision.
- MRI findings showed a correlation between visual acuity and the reduction of peritrigonal white matter.
- The extent of calcarine atrophy also correlated with the degree of visual acuity.
Conclusions:
- A clear relationship exists between visual impairment and specific MRI findings in children with PVL.
- Teller Acuity Cards and MRI are valuable tools for detecting visual impairment in this cohort.
- These methods can improve clinical diagnosis and therapeutic strategies for infants with PVL and CVI.