people tell me my daughters' (and especially mia's) eyes are like mine.

that may be so, however, the brown iris/pupil part is totally Naoto. You can see white all around my brown bit. Mia and Maika have the slight corners of white only in the sides of their eyes. It makes their eyes look a little bit like animal eyes.

Of course Naoto's eyes are so narrow that you mostly only see the brown. It is strangely attractive to me.