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The incidence and visual acuity outcomes of children identified with ametropic amblyopia by vision screening
Mohammed Aftab Maqsud1, Gemma E Arblaster2
1Orthoptic Department, Hull Royal Infirmary, Hull, United Kingdom.
Insights
Ametropic amblyopia affects 2%-3.2% of young children, with many experiencing persistent reduced vision despite treatment. Early detection through vision screening is crucial for identifying this condition.
Area of Science:
- Ophthalmology
- Pediatric Vision
- Public Health
Background:
- Ametropic amblyopia, or "lazy eye," arises from uncorrected refractive errors.
- Early detection and intervention are vital for optimal visual development in children.
Purpose of the Study:
- To determine the incidence of ametropic amblyopia in a vision screening program.
- To report visual acuity outcomes in children diagnosed with ametropic amblyopia.
Main Methods:
- Retrospective review of medical records for children aged 4-5 years undergoing vision screening.
- Analysis of data including final visual acuity, refractive error, and follow-up for children with ≤0.30 logMAR in each eye.
Main Results:
- The incidence of ametropic amblyopia ranged from 2% to 3.2%.
- Treated children achieved a mean visual acuity of 0.12 logMAR, significantly poorer than the age-appropriate mean of 0.00 logMAR.
- 33 children with ametropic amblyopia were identified with at least 1 year of follow-up.
Conclusions:
- Ametropic amblyopia is treatable, but persistent visual deficits are common by age 7.
- Routine vision screening identifies significant numbers of children with ametropic amblyopia who might not otherwise seek care.
Purpose:
To determine the incidence of ametropic amblyopia within a vision screening program's population and report the visual acuity outcomes of children identified with the condition.
Method:
The medical records of children who underwent vision screening as their first assessment at 4-5 years of age between September 1, 2005 and August 31, 2006, were retrospectively reviewed. Children referred with ≤0.30 logMAR in each eye with at least 1 year of follow-up had their hospital notes reviewed and data on final visual acuity, refractive error, and follow-up period collected.
Results:
A total of 33 children identified as having ametropic amblyopia with a follow-up of at least 1 year. The incidence of ametropic amblyopia was 2%-3.2%, depending on the definition used. The mean visual acuity achieved after treatment was 0.12 logMAR, which is significantly less than the age-appropriate mean of 0.00 logMAR (P < 0.01).
Conclusions:
Ametropic amblyopia responds to treatment, but most children demonstrate persistent reduced visual acuity at age 7 years. The incidence of ametropic amblyopia within a routine vision screening population shows that significant numbers fail to self-present.
