Paediatric
Paediatric (Congenital and Infantile) Cataract
Also known as: congenital cataract, infantile cataract, paediatric cataract, pediatric cataract, white pupil baby, lens opacity infant, absent red reflex, deprivation amblyopia cataract
Filed as: Emergency
Source-cited from the record's own evidence list. Clinical content programme led by Dr Ankit Mathur, PhD, Grad Cert Ocu Thera, B.S. Optom. How the clinical content is governed
Clinical decision support only
Overview
A lens opacity present at birth or developing in infancy. The defining feature for a primary-care clinician is that THE CRITICAL PERIOD IS MEASURED IN WEEKS, NOT MONTHS. Reported optimal timing is surgery around 6 weeks of age for a unilateral visually significant cataract and by 8 weeks for bilateral; delaying beyond 10 weeks increases the likelihood of a 20/100 or worse visual outcome. A cataract found in an infant is therefore a same-day referral, not a routine one.
Recognition
Symptoms: what patients report
- Often none reported — the infant cannot complain and the parents may notice nothing.
- Parents may report the eye 'looks white' or that the pupil glows white in photographs.
- Poor visual behaviour: not fixing on faces, not following, or reduced visual interest.
- In older children, reduced vision, glare, or monocular diplopia.
Signs: what the examination shows
- Absent, dull or asymmetric red reflex on Bruckner testing — the single most important screening sign.
- Blackening or distortion of the retinoscopic reflex, sometimes the earliest objective sign of a lesser opacity.
- Leukocoria when the opacity is dense and central.
- Nystagmus — typically in BILATERAL dense cataract, and a sign that visual development has already been affected.
- Strabismus — typically in UNILATERAL cataract, and often the presenting complaint.
- Any dense central opacity of 3 mm or more in a young child should be regarded as visually significant.
What OptoGuide™ covers for paediatric (congenital and infantile) cataract
- Pattern reasoning: what this combination of findings points to, and its differentiators
- Don't-miss risks and escalation triggers
- Management tiers with linked Australian therapeutics
- Referral urgency, specialty, and letter drafting
Sources
- Pediatric Cataracts Overview — AAO
- RANZCO — Paediatric Referral Guidelines (April 2025)
- Optometry Australia — Paediatric Eye Health and Vision Care clinical practice guide (Aug 2016)
- Vision screening in newborns and early childhood. Jullien S. BMC Pediatrics. 2021;21(Suppl 1):306.
- A White Reflex in a Previously Healthy 21-Month-Old Boy. Malsch RM, Dalvin LA. Pediatrics in Review. 2025;46(5):e17-e21.
- Retinoblastoma and beyond: pediatric orbital mass lesions. Rumboldt Z, Dodig D, Galluzzi P, et al. Neuroradiology. 2025;67(2):469-492.
Standard texts: Kanski's Clinical Ophthalmology: A Systematic Approach, The Wills Eye Manual.