Who We Serve
Eye Care for Preschool Children
The exam before school starts. Picture-based testing, amblyopia detection while it is still treatable, and the focusing skills reading will demand.
A preschooler will not tell you their vision is a problem. They have no basis for comparison, so whatever they see is simply what seeing is. That single fact is why this age group is examined on a schedule rather than in response to a complaint.
It is also the age at which the most consequential treatable condition is still comfortably treatable. Amblyopia responds well while the visual system is still developing, and the developmental window narrows through this period.
Amblyopia, and why this age matters most
Amblyopia, commonly called lazy eye, develops when one eye sends a poorer image to the brain and the brain begins to suppress it. It is the most common cause of vision loss in children and it frequently produces no outward sign whatsoever. The child sees perfectly well with the good eye and has never known anything different, so nothing gets reported.
The visual system develops through roughly age eight. Treatment during that window can restore vision in the affected eye. After it, the opportunity narrows considerably and eventually closes. A child treated at four has a materially better prognosis than the same child treated at nine.
Treatment is usually glasses first, since correcting the underlying refractive difference resolves a great many cases on its own, sometimes with patching or drops to encourage the weaker eye. It works, and it works best now.
Testing a child who cannot read
Nothing about this exam requires reading. We use picture charts and shape-matching, which most three-year-olds manage happily and which produce measurements just as reliable as letters.
Where a child will not or cannot participate, we fall back on the objective techniques used for infants. Retinoscopy measures refractive error without any response. Cover testing and light reflexes assess alignment. Stereo testing using shapes that appear to float assesses whether both eyes are working together.
We also examine the health of the eye itself, which no screening does and which is the part that finds the rare but serious things.
What we check beyond distance vision
- Farsightedness
- The single most commonly missed condition in this age group. A farsighted child can often read a distance chart perfectly by using focusing effort, which is invisible on the chart and exhausting during sustained near work.
- Eye teaming
- Whether both eyes point at the same place and work as a pair. Problems here produce discomfort during near work long before they produce anything visible.
- Focusing
- The ability to shift and sustain focus at reading distance. Early school work asks this of a child for the first time.
- Depth perception
- Requires both eyes working together properly. Its absence can be the first indication of an alignment problem.
- Colour vision
- Worth establishing early. So much preschool and early-years material is colour-coded that a colour deficiency changes how a teacher should present work.
Signs worth acting on
- An eye that turns in or out, even intermittently or only when tired
- Covering or closing one eye to look at something
- Head tilting or turning to see
- Sitting very close to the television or holding books unusually close
- Squinting to see at distance
- Excessive eye rubbing that is not obviously tiredness or allergy
- Avoiding close activities such as puzzles, colouring or being read to
- Clumsiness or difficulty with catching and other hand-eye tasks
- Complaints of headaches, which preschoolers report rarely and should be taken seriously when they do
The exam before school starts
Early education is visually demanding in a way nothing before it has been. Sustained near work, copying from a board, tracking across a line of text, and holding focus for far longer than a preschooler has ever needed to.
A child who starts school with an uncorrected vision problem does not usually report it. They find the work harder, they tire faster, and they draw conclusions about themselves. Correcting it beforehand removes a disadvantage before it turns into a confidence problem.
This is also the moment to establish a baseline. Annual exams from here mean that when a prescription starts moving, we know how fast, which is the measurement that decides whether myopia management is warranted.
What we check at this stage
Every exam is adapted to who is in the chair. For this group, these are the things that actually change the plan.
- Visual acuity using pictures or shape matching rather than letters
- Refractive error, measured objectively where the child cannot respond
- Eye alignment and binocular coordination
- Focusing accuracy and flexibility at near
- Depth perception and stereo vision
- Colour vision
- Full eye health including the retina and optic nerve
Related
- Eye Care for Infants and ToddlersFirst eye exam at around six months. We examine babies using objective techniques that need no response at all from the child.
- Eye Care for School-Age ChildrenThe years when myopia appears and progresses fastest. What a school screening misses, and why a reading problem is sometimes a vision problem.
This page is general educational information, not medical advice or a diagnosis. If you are experiencing sudden vision loss, eye pain or an eye injury, contact us immediately or go to an emergency room.
Preschool Children: common questions
My child cannot read letters. Can you still test them?
Yes, easily. We use picture charts and shape matching, and where a child will not participate we use objective techniques that require no response at all. We examine infants routinely, so a preschooler is straightforward.
The nursery did a vision check and it was fine. Is that enough?
No. A screening checks distance acuity and very little else. It routinely passes children with farsightedness, focusing problems and eye teaming disorders, and it does not look inside the eye at all.
How do I get a three-year-old to cooperate?
Book when they are normally alert rather than near a nap, bring a familiar toy, and let us handle the rest. We do this constantly and we do not need perfect cooperation to get reliable information.
What if my child needs glasses this young?
Preschoolers adapt to glasses far better than parents expect, particularly when the glasses genuinely help. Let the child choose the frame from the ones that fit properly. A child who picked their glasses wears them.
Is it too late if my child is already five?
No. Amblyopia treatment works well through to around age eight and is worth starting at any point within that window. Earlier is better, and five is comfortably inside it.
Book an appointment with a doctor who has time for you
We schedule 2 patients an hour, so your exam is unhurried and your questions get answered. Most patients are seen within a few days.