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Measuring visual fields in children with cerebral visual impairment using Baby Vision Screener
Monika Thakur1,2, Tithi Halder1, Anantha Padmanabhan1
1Brien Holden Institute of Optometry and Vision Sciences, Hyderabad Eye Research Foundation, L V Prasad Eye Institute, Hyderabad, India.
Insights
The Baby Vision Screener (BaViS) is a reliable tool for assessing visual fields in children with cerebral visual impairment (CVI). This study found that BaViS effectively identified visual field defects in a significant portion of children with CVI.
Area of Science:
- Ophthalmology
- Pediatric Neurology
Background:
- Cerebral visual impairment (CVI) affects visual processing in children.
- Accurate assessment of visual field defects is crucial for managing CVI.
Purpose of the Study:
- To evaluate the feasibility and reliability of the Baby Vision Screener (BaViS) for visual field testing.
- To identify visual field defects in children diagnosed with CVI.
Main Methods:
- Retrospective review of medical records for 32 children (11 months-14 years) with CVI.
- Kinetic perimetry using the in-house developed BaViS device to plot visual field isopters.
- Assessment of visual acuity and contrast sensitivity using appropriate tools.
Main Results:
- BaViS testing was feasible in 91% of children, with reliable visual field isopters obtained in 72%.
- Visual field defects were identified in 38% of children with reliable results, commonly showing generalized or inferior field reduction.
- 62% of children presented with impairments in multiple visual function domains.
Conclusions:
- The Baby Vision Screener (BaViS) demonstrates potential for quantifying visual fields in young children with CVI.
- Approximately two-fifths of the CVI cohort exhibited visual field defects.
- Comprehensive visual field assessment is vital for the management of pediatric CVI.
Purpose:
This retrospective study was undertaken to (1) determine the feasibility and reliability of Baby Vision Screener (BaViS) and (2) to test and identify visual field defects in children with cerebral visual impairment (CVI).
Methods:
An in-house developed device, BaViS, was used to test the visual fields. A total of 32 children (mean age: 6.3 ± 3.2 years and range: 11 months to 14 years) with CVI were included after their medical records were reviewed (from June 2021 to October 2023). Kinetic perimetry was done using BaViS in all these children to plot the visual field isopter. Different tools were used for measuring visual acuity and contrast sensitivity as appropriate.
Results:
Most children (91%, n = 29/32) were testable, and large majority (72%, n = 21/29) had reliable visual field isopters plotted with BaViS. Of the children with reliable visual field results, 38% had visual field defects, either in isolation or with other visual function deficits. Generalized field extent reduction and inferior visual field reduction were the most common visual field defect patterns. 62% of children had visual impairment in more than one visual function domain.
Conclusions:
BaViS shows good potential to be used for quantifying visual fields even in younger children with CVI. About two-fifths of the children with CVI in our test cohort showed visual field defects. Measuring visual fields, along with other visual functions, will be important for managing children with CVI.
