Congenital Cataracts
The short answer
Congenital cataracts are cloudiness in the lens of the eye that is present at birth, occurring in approximately 1 in 2,500 live births. They can affect one or both eyes and range from small opacities that do not affect vision to dense cataracts that completely block light. Dense congenital cataracts are a medical urgency because they can cause irreversible amblyopia (lazy eye) if not treated promptly. Surgery to remove the cataract is the primary treatment and may need to be performed within the first few weeks of life for the best visual outcome.
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By Age
What to expect by age
0-3 months
Congenital cataracts should be detected through the red reflex test performed at birth and during early well-child visits. A normal red reflex shows a symmetric red-orange glow in both eyes. An absent, white, or asymmetric red reflex warrants immediate referral to a pediatric ophthalmologist. Dense unilateral cataracts ideally should be removed by 6-8 weeks of age, and dense bilateral cataracts by 10 weeks, to minimize the risk of permanent vision loss from amblyopia.
3-6 months
If a cataract was removed in the newborn period, the baby will need ongoing visual rehabilitation, which typically involves a contact lens or intraocular lens implant plus patching of the stronger eye to prevent amblyopia. Close follow-up with the pediatric ophthalmologist is essential. Small cataracts that do not significantly block the visual axis may be monitored without surgery.
6-12 months
Post-surgical follow-up continues with frequent eye exams to monitor for complications such as secondary glaucoma, which occurs in about 15-25% of children after congenital cataract surgery. Visual development should be monitored, and any patching or lens prescription should be adjusted regularly based on the child's visual progress.
12 months+
Long-term follow-up is needed throughout childhood. Children who had congenital cataract surgery require monitoring for glaucoma, refractive changes, and amblyopia for years. Glasses or contact lenses will likely be needed. With early treatment and consistent follow-up, many children achieve functional vision, though visual outcomes depend on the type and severity of the cataract and timing of intervention.
What Should You Do?
When to take action
- Your baby has bright, clear eyes with a symmetric red reflex in both pupils
- Both of your baby's eyes appear the same size and clarity
- Your baby tracks faces and objects appropriately for their age
- Well-child visit eye screenings have been normal
- You notice a slight cloudiness or hazy spot in one or both of your baby's eyes
- Photos of your baby show a different-colored reflex between the two eyes
- Your baby does not seem to see well or track objects as expected for their age
- You notice a white reflection in your baby's pupil (leukocoria) in person or in photographs, as this requires urgent evaluation to distinguish cataracts from retinoblastoma
- Your newborn's red reflex test is abnormal or absent, as this warrants immediate referral to a pediatric ophthalmologist for evaluation and possible surgical intervention
Sources
Related Resources
Trust your instincts. If something feels wrong, reach out to your pediatrician.
Worrying about your baby means you care. That is a good thing.
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