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Updated: May 21, 2026
Exploring Infant Sensitivity to Visual Language using Eye Tracking and the Preferential Looking Paradigm
Published on: May 15, 2019
A new perimeter using the preferential looking response to assess peripheral visual fields in young and
Louise E Allen1, Michael E Slater, Ruth V Proffitt
1University of Cambridge, The Old Schools, Trinity Lane, Cambridge, United Kingdom. louise.allen@addenbrookes.nhs.uk
Insights
A new preferential looking perimeter (PLP) accurately assesses visual field deficits in children. This method is highly sensitive and specific, offering a valuable alternative to traditional confrontation testing for pediatric visual field assessment.
Area of Science:
- Ophthalmology
- Pediatric Neurology
- Visual Science
Background:
- Assessing visual field deficits in young children or those with developmental delays presents significant challenges.
- Traditional methods like confrontation visual field testing can be unreliable or uninterpretable in this population.
Purpose of the Study:
- To evaluate the sensitivity, specificity, and interpretability of a novel semiautomated static perimeter utilizing preferential looking response.
- To compare the performance of this new perimeter against established confrontation visual field testing.
Main Methods:
- The study involved 74 children aged 3-10 years, including 32 controls and 42 with potential visual field deficits.
- The preferential looking perimeter (PLP) was used, observing natural eye movements to target stimuli to map the peripheral visual field.
- Confrontation visual field testing served as the gold standard for comparison.
Main Results:
- The PLP demonstrated 100% sensitivity and 100% specificity when compared to confrontation testing.
- Interobserver agreement for the PLP was excellent.
- Interpretable results were obtained in 71% of children for whom confrontation testing was unsuccessful.
Conclusions:
- The preferential looking perimeter (PLP) is an effective new tool for identifying significant visual field loss in young or developmentally delayed children.
- PLP offers distinct advantages over confrontation visual field testing for this pediatric cohort.
Purpose:
To compare the sensitivity, specificity, and interpretability of a newly developed semiautomated static perimeter based on the preferential looking response to the results of confrontation visual field testing in a group of young and/or developmentally delayed children with and without visual field deficit.
Methods:
The preferential looking perimeter (PLP) uses observation of the child's natural eye movement response to an appearing target to determine the peripheral visual field. We compared preferential looking perimetry to confrontation testing in 74 children 3-10 years of age (mean, 6.6 years; median, 7 years), including 32 controls and 42 children with neurological and ocular disorders that could cause significant visual field deficit.
Results:
Using confrontation testing as the gold standard, the PLP was 100% sensitive and 100% specific (95% CI, 90%-100%), with excellent interobserver agreement. An interpretable result could be achieved in 15 (71%) of the 21 children in whom confrontation testing was unhelpful.
Conclusions:
PLP is a useful new technique for assessing significant visual field loss in young or developmentally delayed children, with many advantages over confrontation testing.
