Preferential looking as a guide for amblyopia therapy in monocular infantile cataracts

Area of Science:

• Ophthalmology
• Pediatric Ophthalmology
• Vision Science

Background:

• Amblyopia is a persistent challenge in treating infantile monocular cataracts, despite surgical and refractive advancements.
• Current amblyopia therapy recommendations for the preverbal period range widely, from no patching to extensive eye occlusion.
• Infantile monocular cataracts require effective amblyopia management strategies for optimal visual development.

Observation:

• Preferential looking (PL) acuities were measured sequentially in four infants post-monocular cataract surgery and contact lens correction.
• Occlusion of the non-operated (phakic) eye was adjusted based on PL acuity measurements, ranging from 25% to 100% of waking hours.
• Patching schedules were modified every 3-4 months in response to observed changes in PL acuities.

Findings:

• Increased patching intensity negatively impacted acuity development in the operated (aphakic) eye but benefited the non-operated (phakic) eye.
• Decreased patching intensity generally improved or maintained acuity in the phakic eye, though it sometimes hindered progress in the aphakic eye.
• Subsequent recognition acuities confirmed the predictive value of PL acuities and demonstrated useful vision in the aphakic eyes.

Implications:

• Modulating eye patching therapy based on PL acuity measurements may lead to better visual outcomes for infants with monocular cataracts.
• Developing adaptive patching guidelines informed by sequential visual acuity measurements is crucial for amblyopia treatment.
• Personalized amblyopia management strategies are essential for maximizing visual potential in pediatric cataract patients.