Giant prehistoric ‘prawns’ developed night-vision eyes

Radiodonts, ancient arthropods, dominated oceans 500 million years ago. They had a unique body structure and developed sophisticated eyes, as revealed by a study led by Dr. John Paterson. The research, published in Science Advances, focused on fossils from Emu Bay Shale, South Australia, where the visual surface of the eyes is preserved. Unlike other sites, these fossils provide detailed information on eye lenses, with one sample having 28,000 lenses. Radiodonts had sharp vision and could see in varying light levels, similar to modern insects like dragonflies.

In which locations were other eye fossils found, and what was the limitation of those findings?

What capabilities did the radiodonts possess in terms of vision?