In general, a child's eye is not developed enough to cope with the sun's UV rays.
The extreme sensitivity of children's eyes to the sun's rays can be explained by two factors:
> Watery eyes
> Intolerance to light
> Inadvertent eye rubbing
> Early onset of cataracts
> Macular degeneration (AMD)
Also take a look at our advice guides on how to choose the right children's sunglasses.