patrick.net

Interesting idea, one I had not heard before, and at least plausible. Yet it is also true that blue eyes are an adaptation to the low-light conditions of the far north, and even wolves in the north evolved blue eyes:

So it's also plausible that sexual selection had nothing to do with blue eyes. Wolves probably don't have a clue about paternity.

A third possibility is that blue eyes are just another expression of human neoteny, though neoteny itself may be a result of sexual selection.

Another interesting tidbit I ran across: long hair is proof that you have been healthy enough to maintain your hair for a year or two, and so the general male preference for long hair in women might be a subconscious evaluation of their health and therefore fertility.

Personally, I prefer women with brown eyes, though everyone in my family on both sides has blue eyes.

rando says

So it's also plausible that sexual selection had nothing to do with blue eyes.

Sex may not have been the impetus for the evolution of blue eyes, but clearly it plays a part in the propagation of the trait.

https://www.sciencedaily.com/releases/2008/01/080130170343.htm

New research shows that people with blue eyes have a single, common ancestor. Scientists have tracked down a genetic mutation which took place 6,000-10,000 years ago and is the cause of the eye color of all blue-eyed humans alive on the planet today.

This is all totally accurate, and a good reason for every man to go and get blue eyes for themselves now ... well, except for the fact that eye color is determined by more than just simple recessive/dominant interaction and blue eyed parents do have brown eyed offspring ...

... or so my wife told me.