Can strabismus be noticeable?
In general, manifest strabismus is relatively easy to detect, while latent or intermittent strabismus may be difficult to notice. If there are concerns, it is recommended to seek medical advice early. Detailed analysis is as follows:

In cases of manifest strabismus (where the eye position is continuously misaligned), asymmetry of the two eyes can be directly observed in daily life—for instance, one eye deviating inward, outward, or downward. The deviation becomes particularly noticeable when focusing on an object, making the abnormality easily detectable by others. Patients themselves may also experience symptoms such as double vision or eye fatigue, making this type of strabismus relatively straightforward to identify.
In contrast, latent strabismus (where eye misalignment only appears under specific conditions) or intermittent strabismus (occurring only during fatigue or lack of concentration) is much harder to detect with the naked eye. In normal conditions, the appearance of both eyes seems normal, and the misalignment can only be identified through professional ophthalmic examinations—such as cover tests or synoptophore testing—making it easy to overlook in everyday life.
When any possible abnormal eye alignment is noticed, a timely visit to an ophthalmologist for professional evaluation is essential. Children should undergo regular vision screenings to detect strabismus early. Once diagnosed, appropriate corrective measures should be followed as directed by a physician to prevent adverse effects on visual function development.