Combined Occlusion Therapy and Home-Based Perceptual Learning in Children with Persistent Amblyopia: A Longitudinal...

Area of Science:

• Ophthalmology
• Neuroscience
• Pediatrics

Background:

• Persistent amblyopia often resists conventional occlusion therapy.
• Limited visual acuity improvement occurs once visual acuity plateaus with occlusion alone.

Purpose of the Study:

• To evaluate a two-phase protocol combining occlusion therapy and home-based perceptual learning (PL).
• To assess the efficacy of this combined approach in children with persistent amblyopia, including congenital cases.

Main Methods:

• A longitudinal case series of 40 children with persistent amblyopia.
• Phase I: Occlusion therapy until visual acuity plateaued.
• Phase II: Combined continued occlusion with home-based PL training.

Main Results:

• Mean BCVA improved from 0.45 to 0.26 logMAR after Phase I and to 0.13 logMAR after Phase II.
• Treatment success was 72% with ≥10 hours of PL versus 40% with <10 hours.
• Modest but significant improvement in stereoacuity was observed.

Conclusions:

• The combined occlusion and PL protocol enhanced visual acuity and stereoacuity in persistent amblyopia.
• Higher cumulative PL exposure correlated with greater treatment success.
• Perceptual learning is a valuable adjunct to standard amblyopia management.