Is there value in measuring near visual acuity during occlusion therapy for amblyopia?

Area of Science:

• Ophthalmology
• Pediatric Optometry
• Vision Science

Background:

• Amblyopia, or 'lazy eye,' affects visual development and is often treated with occlusion therapy (patching).
• Accurate visual acuity (VA) measurement is crucial for diagnosing and monitoring amblyopia treatment effectiveness.

Purpose of the Study:

• To compare near and distance visual acuity (VA) in amblyopic eyes before, during, and after occlusion therapy.
• To determine if VA testing proximity influences the assessment of amblyopia treatment outcomes.

Main Methods:

• Fifty-four children (4-7 years) with amblyopia underwent conventional occlusion therapy.
• Uniocular near and distance VA were measured using Crowded LogMAR tests at various stages of treatment.

Main Results:

• No significant differences were found between near and distance VA in amblyopic eyes before, during, or after occlusion therapy.
• Fellow (non-amblyopic) eye VA also showed no significant changes between near and distance testing throughout the study.

Conclusions:

• Visual acuity improvement in amblyopia does not significantly differ between near and distance testing.
• Clinicians can use either near or distance VA testing for amblyopia diagnosis and monitoring, offering flexibility in clinical practice.
• This flexibility may help overcome patient concentration issues and prevent treatment delays.