Childhood vision screening by age
- Topic
Children do not complain that they see badly. Checking the eyes at each well-child visit finds amblyopia, squint, cataract and tumours in time.
See it in 3D: Lens
What it is
Young children rarely report poor vision, and the conditions that threaten their sight (amblyopia, strabismus, refractive errors, cataract, retinoblastoma) are treatable only if found early. Vision screening is therefore part of every well-child visit. Colombian guidelines recommend screening from birth every six months until the child can cooperate with an acuity test, then yearly until 5 years and every one to two years after that.
Key facts
- From birth: red reflex, external inspection, pupils and corneal light reflex.
- From about 3 months: fixing and following, then the cover test.
- Under 3 years or uncooperative children: instrument-based screening (photoscreening or autorefraction).
- From 3 years: visual acuity with picture or letter-matching charts (Lea, HOTV).
- Refer at 3 to 4 years with acuity of 20/50 or worse in either eye, at 4 to 5 years with 20/40 or worse, and after 5 years with a two-line difference between the eyes or failure at 20/30.
In clinical practice
- Any abnormal red reflex, strabismus, nystagmus, a drooping lid covering the pupil or parental concern is an immediate referral, whatever the age.
- Children with risk factors (prematurity, family history of strabismus, amblyopia or childhood cataract, developmental delay) need a full eye exam in addition to screening.
- The Colombian guidelines recommend a visual health certificate at school entry (preschool and primary).
Next step / Initial management
- Abnormal screening: refer to optometry or paediatric ophthalmology for a full exam with cycloplegic refraction.
- Abnormal red reflex or leukocoria: urgent paediatric ophthalmology.
- Child with risk factors: full eye exam beyond screening.
- Record every screening result in the child health record.
Test yourself
Think of the answer, then tap the question to see it.
How often should vision be screened in young children according to the Colombian guideline?
Every six months from birth until the child cooperates with an acuity test, then yearly until 5 years and every one to two years after.
Which screening method is used in children under 3 years?
Instrument-based screening (photoscreening or autorefraction), plus the red reflex and alignment tests.
Which acuity result at 4 to 5 years requires referral?
20/40 or worse in either eye.
Connections
See it in 3D1
The structures of Durgical's 3D anatomy where it is found.
Educational content; not a clinical guideline and no substitute for assessment by a health professional. For sudden visual loss, severe eye pain, a chemical burn or an eye injury, go to an emergency department at once.
Sources: Guía de práctica clínica para la prevención, la detección temprana, el diagnóstico, el tratamiento y el seguimiento de la ambliopía en menores de 18 años (Guía No. 48) (Ministerio de Salud y Protección Social de Colombia, 2016); Guía de práctica clínica para la detección temprana, el diagnóstico, el tratamiento y el seguimiento de los defectos refractivos en menores de 18 años (Guía No. 47) (Ministerio de Salud y Protección Social de Colombia, 2016); Red Reflex (StatPearls Publishing (NCBI Bookshelf), 2023).
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Representative model, for educational purposes only.