How to evolve human-like eyes that can stare at the sun without protection?

Imagine a species that is very much like humans in shape, size and physiology. But they are able to stare at the sun for long periods without suffering any harm, and without needing any artificial device.

Suppose the evolutionary pressure for this is that they come from a much brighter world.

I would like them to have visual 20/20 vision, and acuity and color resolution equal or close to ours - but that is NOT a constraint. If the capacity to stare at the sun requires their sight to be worse than humans' in some aspect or another, so be it.

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How to evolve human-like eyes that can stare at the sun without protection?

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