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Instrument-based screening for amblyopia risk factors in a primary care setting in children aged 18 to 30 months
Mònica Vilà-de Muga1, Diego Van Esso2, Silvia Alarcon3
1Primary Care Carmel, Catalan Institute of Health, Murtra 130, 08032, Barcelona, Spain. mvmuga@yahoo.es.
Insights
Early detection of amblyopia risk factors in young children is crucial. A photoscreener accurately identified visual alterations in toddlers, enabling timely intervention and preventing vision loss.
Area of Science:
- Ophthalmology
- Pediatric Vision Care
- Diagnostic Technology
Background:
- Amblyopia, or "lazy eye," is the primary cause of vision impairment in children.
- Early detection is vital to prevent irreversible vision loss.
- Traditional visual acuity tests are challenging for children under four years old.
Purpose of the Study:
- To identify amblyopia risk factors in children aged 18 to 30 months in primary care settings.
- To evaluate the effectiveness of a photoscreener device for early amblyopia detection.
- To assess the accuracy of the photoscreener in identifying visual alterations.
Main Methods:
- Prospective study involving 453 children aged 18-30 months in primary care.
- Utilized an automated photoscreener for initial visual assessment.
- Referred children with detected alterations to an ophthalmologist for confirmation.
Main Results:
- The photoscreener identified visual alterations in 9.3% of children, with astigmatism being most common.
- The device demonstrated high sensitivity (89%) and specificity (91%).
- 38% of screened children required follow-up, and 47% needed corrective glasses.
Conclusions:
- Instrument-based photoscreening is a valuable and accurate tool for detecting early amblyopia risk factors in toddlers.
- This method facilitates early diagnosis and intervention in primary care settings.
- Photoscreening significantly aids in managing pediatric vision health.
Abstract:
Amblyopia is the leading cause of vision impairment in children, and its early detection can avoid irreversible consequences for a child's visual ability. In this prospective study, to detect amblyopia risk factors, we examined patients aged 18 to 30 months in primary care settings. Patients were referred to an ophthalmologist for confirmation. The main aims were to detect amblyogenic risk factors and to assess the usefulness of a photoscreener in such settings. Out of 453 patients, 42 (9.3%) presented visual alterations according to the photoscreener, with astigmatism being the most common. The instrument had good sensitivity (89%) and specificity (91%), with a positive predictive value of 76% and a negative predictive value of 96%. Overall, 38% of the patients required follow-up, and 47% needed glasses. The automated screening device allowed these children to be diagnosed at an early stage.Conclusions: The use of a photoscreener to screen 2-year-old children in primary care settings was helpful and accurate. What is Known: • Early detection of amblyopic risk factors is important to avoid vision defects. However, it is very difficult to measure visual acuity using visual charts in children younger than 4 years old. What is New: • Instrument-based screening in children aged 18 to 30 months allows excellent detection of early amblyopia risk factors in primary care settings.
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