White Pupil Reflex (Leukocoria) in Babies
Content reviewed against published AAP, Mayo Clinic, CDC guidelines
Last reviewed:
Leukocoria (white pupil reflex) is a white reflection from the pupil instead of the normal red reflex seen in photographs or on direct examination. It is a critical finding that requires urgent ophthalmologic evaluation because it can indicate retinoblastoma (eye cancer), cataracts, or other serious eye conditions. Parents often first notice it in flash photographs where one eye shows red-eye and the other appears white.
Key takeaways
- Leukocoria (white pupil reflex) is a white reflection from the pupil instead of the normal red reflex seen in photographs or on direct examination.
- Most common cause: Camera artifact or angle (asymmetric red reflex in photos due to gaze direction)
- Emergency: White pupil reflex confirmed on examination by pediatrician
- Home care: Take flash photos of your baby looking directly at the camera in a dimly lit room
Possible Causes
When to Seek Help
Emergency — Call 911 or go to ER:
- White pupil reflex confirmed on examination by pediatrician
- White reflex with sudden eye swelling, pain, or redness (possible advanced disease)
- White reflex with orbital swelling or proptosis
Urgent — See doctor today:
- White pupil noticed in photos consistently across multiple images
- Absent red reflex in one eye noted by parent or provider
- White pupil with new onset strabismus (eye crossing)
- White or yellow reflex in one eye while other eye is red in photos
Same-day appointment:
- Concern about pupil appearance in one photo but not others
- Family history of retinoblastoma with any eye concern
Monitor at home:
- Single photo with asymmetric reflex that is not reproduced in other photos
- Known normal exam with occasional artifact in certain lighting
By Age
0-6 months
Normal: Both pupils should show an equal red reflex when examined with an ophthalmoscope or in flash photos. Slight asymmetry in one photo is often just the angle.
Worry if: Consistently white, yellow, or absent red reflex in one or both eyes across multiple photos or angles. Any asymmetry noted by pediatrician on red reflex exam.
6-24 months
Normal: Red reflex should be equal and symmetric. Flash photos should show red-eye equally in both eyes when looking directly at the camera.
Worry if: White reflex noted in multiple photographs, strabismus (eye crossing) with white reflex, one eye appearing different from the other in photos consistently, or difference in visual behavior between eyes.
2-5 years
Normal: Red reflex continues to be checked at well-child visits. Children should have equal bilateral red reflexes.
Worry if: New onset leukocoria, eye crossing with white reflex, visible white mass in pupil, vision loss in one eye, or pain and redness with white pupil.
Home Care
- Take flash photos of your baby looking directly at the camera in a dimly lit room
- Compare the red reflex between both eyes in multiple photos taken at different times
- If one eye consistently appears white, yellow, or different from the other, seek evaluation
- Do NOT delay medical evaluation if leukocoria is suspected—early detection is critical
- There are no home remedies for leukocoria—it always requires professional evaluation
- Keep all scheduled well-child visits where red reflex screening is performed
- If you have a family history of retinoblastoma, inform your pediatrician at the first visit
Frequently asked questions
What causes white pupil reflex (leukocoria)?
When is this an emergency?
What can I do at home?
When should I call the doctor?
Sources
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources
Related Symptoms
Bottom line
Most cases of white pupil reflex (leukocoria) in babies are not emergencies. However, seek immediate care if white pupil reflex confirmed on examination by pediatrician.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.