Eyes worry parents. They look funny in different lights, they wander, they water, they get gunky, and they sometimes look frankly alarming after a hard birth. Most of these are reassuring once you know what they are. A small list aren't, and those genuinely matter — because the visual system develops in the first months, and conditions that go unnoticed past that window can become permanent.
Healthbooq covers what is checked at the newborn examination and what to watch for between checks.
What Looks Worrying But Almost Always Isn't
Subconjunctival haemorrhage. A bright red patch in the white of the eye, sometimes covering most of it. Tiny capillaries burst during the pressure of delivery and leak under the conjunctiva. It is painless, does not affect vision, and the eye underneath is fine. The blood resorbs over 1 to 3 weeks, going from bright red to yellow-green like a small bruise before disappearing. No treatment needed.
Intermittent crossing or wandering. In the first 8 to 12 weeks, babies don't yet have full ocular alignment — the brain hasn't finished wiring up the conjugate gaze system. Eyes that briefly cross, drift, or move independently are common and normal until about 3 months. Babies with prominent epicanthal folds (a fold of skin at the inner eye, common in some ethnicities and in any newborn until the nose bridge develops) often look like they have a squint when they don't — the iris position relative to the white sclera makes the eye look pulled in.
A useful at-home test: shine a torch at the baby's face. The reflection of the light should appear in the same spot on each pupil. If both reflections are central, the eyes are aligned even if they look crossed.
Watery or sticky eyes (blocked tear duct). Up to 1 in 5 babies has a partially blocked nasolacrimal duct in the first months. The duct that drains tears from the inner corner of the eye into the nose is narrow and a small membrane sometimes hasn't broken through. Tears overflow, dry into a sticky crust, and the eye looks chronically wet or gunky. The eye itself is white, the baby is comfortable, and there is no swelling.
Management at home:
- Wipe with cooled boiled water and cotton wool, inner corner outwards, fresh piece each wipe
- Gentle massage over the duct (the soft area between the inner eye corner and the side of the nose) — firm pressure with a finger pad, downwards, 10 strokes a few times a day
- Breast milk has been used and is fine if you have it spare; nothing magical, but lysozyme content gives mild antibacterial effect
- 90% open spontaneously by 12 months
- If still blocked at 12–18 months, an ophthalmologist can probe the duct under brief anaesthetic (a 5-minute procedure)
When to escalate the watery eye picture: redness of the white of the eye, swelling around the eyelid, the baby looks unwell, or a tender lump at the inner corner (dacryocystitis — needs antibiotics).
Yellow tint to the white of the eye. Part of newborn jaundice. Not an eye problem. The whites clear when the bilirubin clears.
Eye colour changes. Most Caucasian babies are born with blue-grey eyes that may change to brown, hazel, or green over the first 6 to 12 months as melanin is laid down in the iris. Babies of African, Asian, or Hispanic descent are often born with darker eyes that may darken further. Final eye colour usually settles by 12 months.
Eyelid puffiness. Common in the first day or two from delivery and from antibiotic eye drops if given. Settles in 24–48 hours.
Subtle differences in eye opening. A slight asymmetry in eyelid opening can be a Horner syndrome (rare, worth flagging) or just normal variation. The 6–8 week check picks this up.
Findings That Need Same-Day Assessment
A white pupil (leukocoria). This is the one finding that should never wait. In a normal eye, light shining into the pupil reflects back red-orange (the basis of the red reflex test, and the cause of red-eye in flash photography). A white reflection means light is being bounced back from something abnormal in front of, or instead of, the retina:
- Congenital cataract — affects about 3 per 10,000 babies; surgery in the first weeks of life is needed to prevent permanent vision loss in the affected eye
- Retinoblastoma — a rare childhood cancer of the retina (about 1 in 18,000 babies); leukocoria is the classic sign, sometimes first noticed in flash photographs
- Persistent fetal vasculature, retinal detachment, intraocular infection — all rarer
If a flash photo of your baby shows white in the pupil rather than red, do not wait for the next check. Show your GP today and ask for an urgent ophthalmology referral. The single most missed presentation of retinoblastoma is the parent who noticed something odd in a photo and was reassured.
A persistent squint past 3–4 months. If one eye is consistently turned in (esotropia), out (exotropia), up, or down, even when the baby is fixing on a face or toy, this is not the immature alignment of early weeks. It is a true squint and needs ophthalmology assessment. The reason it matters: when the eyes don't align, the brain suppresses the image from the deviated eye to avoid double vision, and that eye stops developing normal acuity. The condition is amblyopia ("lazy eye"). Caught before age 7, it can be reversed with patching and glasses. Caught later, the visual loss is often permanent.
Nystagmus. Rapid, rhythmic, involuntary eye movements — usually horizontal, sometimes vertical or rotary, often described by parents as "the eyes shake" or "they look like they're jiggling." It is not normal at any age and warrants ophthalmology assessment to identify cause (congenital nystagmus, ocular albinism, optic nerve hypoplasia, neurological conditions).
A very red, painful eye with discharge in a young baby. Particularly important in the first 4 weeks. Neonatal conjunctivitis from gonorrhoea (within 2–5 days of birth, copious thick yellow-green discharge, very swollen lid) or chlamydia (5 days to 2 weeks of age, mucopurulent discharge, can affect vision and lungs if untreated) requires urgent treatment. Both are now uncommon in the UK because of antenatal screening, but they still happen. A baby with a red, swollen, discharging eye in the first month should be seen the same day.
A non-blanching rash around the eye, or any eye trauma, including a poke that has caused persistent watering, redness, or discomfort — corneal abrasions are easily missed and quite painful.
Eye that doesn't open after 24 hours of age in a baby who isn't sleeping. Usually mild oedema; occasionally something else.
The Routine Eye Checks
The red reflex is checked at:
- Within 72 hours at the NIPE
- 6–8 weeks at the GP check
- The 8-week, 12-week, and 16-week vaccination visits often include a brief look
The check is quick — an ophthalmoscope shone into each pupil from arm's length. A symmetric red-orange glow in both pupils is normal. Asymmetry, white reflex, or absent reflex prompts an urgent ophthalmology referral.
The 6–8 week check additionally looks for:
- Tracking — does the baby follow a face or moving object briefly past the midline?
- Eye movements — symmetric, full range
- External eye appearance — lids, conjunctiva, pupils equal and reactive
- Smile and social engagement — visual function shows in social behaviour
When to Ring Between Checks
Don't wait for the next planned check if you notice:
- White, cloudy, or unusual reflection from the pupil — in life or in a flash photo
- Persistent crossing or wandering past 3 months
- Eyes that "shake" or move rhythmically on their own
- Eye that is constantly red and uncomfortable, with thick discharge, especially in the first month
- Eye that doesn't track faces by 8 weeks
- Excessive sensitivity to light, persistent tearing without sticky discharge, an enlarged or cloudy cornea — possible infantile glaucoma (rare but urgent)
- Any change in eye appearance you can't make sense of — cloudy patch, drooping lid, asymmetric pupils
The threshold for ringing about an eye in a young baby is genuinely lower than for most other concerns, because the timeline for treatment is short and the consequences of waiting are large. GP, health visitor, or NHS 111 are all reasonable first calls.
Key Takeaways
Newborn eyes throw up alarming-looking findings that are almost always normal: a red bloodshot patch from delivery (subconjunctival haemorrhage), eyes that wander or cross intermittently in the first 3 months, watery eyes from blocked tear ducts. The findings that genuinely need urgent assessment are short and specific: a white pupil (in life or in flash photos), a persistent squint past 3–4 months, jiggly eye movements (nystagmus), and a very red painful eye with thick discharge in a young baby. Eye conditions caught in the first weeks have far better outcomes than the same conditions caught at 6 months — so the threshold for asking is low.
