Yes, it is possible to have squint without noticing it. Squint can be present without the person being aware of it, and some people may have a slight squint that is not noticeable, especially if one eye is turned only slightly.
In some cases, a squint may not cause any symptoms, and the person may not be aware that their eyes are misaligned. They may not experience double vision or other symptoms that are commonly associated with squint. But even if a person is not experiencing symptoms, a squint can still cause a reduction of vision in the affected eye, this is why regular eye exams are important to detect squint early, so that it can be treated before it causes permanent vision loss.
Also, some people might have a tendency to develop squint under certain conditions, such as fatigue, stress or when they are too focused on a task and might not notice it. It is also possible that some people adapt to squint and their brain learn to suppress one of the eyes inputs to avoid double vision, and this can lead to amblyopia or 'lazy eye' which can lead to permanent vision loss if not treated.
For more information, consult Dr. Vaidya Eye Centre the Best Squint Specialist in Mumbai.