The supposed “missing links” that would connect a photosensitive spot, to a photosensitive spot in a cavity, to a covered with a lens photosensitive spot in a cavity (an eye); are hardly “missing” - but living among us.
In fact the evidence suggests that the eye evolved at least twice in two independent lines, and in two distinct and different ways.
dreamer, that is amazing. But I don’t have time to look into the eye issue any further right now.