Isoametropic amblyopia due to high hyperopia in children.

Area of Science:

• Ophthalmology
• Pediatric Ophthalmology
• Vision Science

Background:

• High hyperopia (≥4.5 D spherical equivalent) in children is associated with an increased risk of amblyopia and strabismus.
• Isoametropic amblyopia, a form of bilateral amblyopia, can significantly impact visual development in young children.
• Early identification and management are critical for preserving visual function.

Purpose of the Study:

• To identify children with isoametropic amblyopia resulting from moderate to high hyperopia.
• To evaluate associated ocular findings and visual acuity outcomes in this patient group.
• To determine the prevalence of isoametropic amblyopia in children with significant hyperopia.

Main Methods:

• Retrospective chart review of children from pediatric ophthalmology clinics.
• Inclusion criteria: healthy children with ≥4.5 D spherical equivalent and no anisometropia >1.5 D.
• Analysis focused on children diagnosed with bilateral amblyopia (visual acuity ≤20/40).

Main Results:

• An estimated 8.6% of children with ≥4.5 D hyperopia had isoametropic amblyopia (36 out of 418 identified children).
• Children with isoametropic amblyopia presented later (5 years, 1 month) compared to the general hyperopic group (3 years, 5 months).
• Amblyopia treatment with glasses and patching was effective in 36% of cases, with minimal need for strabismus surgery.

Conclusions:

• Children with significant hyperopia (≥4.5 D) are at elevated risk for amblyopia and strabismus.
• Isoametropic amblyopia is a notable risk in this population and warrants proactive management.
• Routine hyperopic correction and screening are recommended for children with ≥4.5 D hyperopia to mitigate risks to visual function.