What is the normal vision for a child?

Patient's question:

The child is currently in middle kindergarten. Today, the kindergarten conducted a vision check for the children, and the results were 0.6 for the left eye and 0.5 for the right eye. Is this normal? Should we take the child to the hospital for further examination? When does a child's vision fully develop?

Doctor's answer:

If it is not visible, it means the eyes are not good, mostly caused by severe eye diseases (such as optic atrophy, some congenital diseases). If you cannot see the target clearly, or only see the big ones and not the small ones, it means your vision is very poor. The range exceeds 1.0. If at this time, there is amblyopia or monocular vision weakness without binocular vision and stereoscopic vision, the chance of correction will be limited, and the prognosis for vision and visual quality will not be very optimistic.

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