We can't even see what the eggs look like. :-( But it's easy to see what they are not the eggs of, if that helps.

They aren't butterfly eggs of any kind, not milkweed tussock moth eggs, not the eggs of milkweed seed bugs, not milkweed leaf beetle eggs.

Could be the eggs of one of the many stinkbugs. Maybe someone at your local Extension office has a simple microscope and can ID them for you, as zzackey suggests. Or you can isolate them in a glass jar with holes in the lid and see what happens, as suggested.

Personally, I'd remove the leaf, inspect carefully for others, and hatch them in a protected location. Just for fun.

You could also simply destroy the eggs.