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High specificity of the Pediatric Vision Scanner in a private pediatric primary care setting
Reed M Jost1, David Stager2, Lori Dao2
1Retina Foundation of the Southwest, Dallas, Texas.
Insights
The Pediatric Vision Scanner shows high specificity (90%) for detecting amblyopia and strabismus in young children during routine check-ups. This device accurately identifies at-risk children, potentially improving vision screening accessibility in primary care.
Area of Science:
- Ophthalmology
- Pediatric Primary Care
- Medical Device Technology
Background:
- Early detection of amblyopia and strabismus is crucial for effective treatment in children.
- Pediatric primary care settings are ideal for routine vision screening.
- Existing screening methods may have limitations in accuracy or accessibility.
Purpose of the Study:
- To evaluate the specificity of the Pediatric Vision Scanner, a binocular retinal birefringence scanner.
- To assess the device's performance in a real-world pediatric primary care setting.
- To compare the Pediatric Vision Scanner's specificity with another autorefractor, the SureSight.
Main Methods:
- 102 preschool children (ages 2-6) were screened during well-child visits.
- Screening involved the Pediatric Vision Scanner and SureSight Autorefractor.
- A masked comprehensive pediatric ophthalmic examination served as the gold standard.
Main Results:
- The Pediatric Vision Scanner demonstrated 90% specificity for amblyopia and strabismus.
- The SureSight Autorefractor showed 87% specificity.
- Likelihood ratio analysis indicated the Pediatric Vision Scanner is highly effective in identifying affected children (PLR=10.2, NLR=0.03).
Conclusions:
- The Pediatric Vision Scanner exhibits high specificity in primary care settings for vision screening.
- The device's performance suggests it can reliably identify children needing further evaluation for amblyopia and strabismus.
- This high specificity may overcome barriers to vision screening in pediatric primary care.
Purpose:
To determine the specificity of the Pediatric Vision Scanner, a binocular retinal birefringence scanner, in its intended setting, a pediatric primary care office.
Methods:
A total of 102 preschool children (age 2-6 years) were screened during a well-child pediatric visit using the Pediatric Vision Scanner and the SureSight Autorefractor and completed a masked comprehensive pediatric ophthalmic examination (gold standard examination).
Results:
Based on the gold standard examination, one child had anisometropic amblyopia, and the remaining 101 had no amblyopia or strabismus. Specificity of the Pediatric Vision Scanner was 90% (95% CI, 82%-95%) while specificity of the SureSight was 87% (95%CI, 79-93%). Combining these results with the sensitivity of the devices determined in our previous study conducted in a pediatric ophthalmology office setting, the positive likelihood ratio for the Pediatric Vision Scanner was 10.2; for the SureSight, 5.0. The negative likelihood ratio for the Pediatric Vision Scanner was 0.03; for the SureSight, 0.42, a significant difference.
Conclusions:
The Pediatric Vision Scanner had high specificity (90%) in screening for amblyopia and strabismus as part of a pediatric well-child visit. Likelihood ratio analysis suggests that affected children have a high probability of being correctly identified by the Pediatric Vision Scanner. The high level of confidence conferred by Pediatric Vision Scanner screening may remove an important barrier to vision screening in pediatric primary care.
