Topic: Question about tagging eyes.

What's with the system for tagging eyes? We have tags for blue_eyes, brown_eyes, red_eyes, hell, even one for black_sclera.

So why is there no real system for tagging pupils? There's only 4 results for cat_eye, and none for vertical_pupil. Goat_eye and horizontal_pupil both come up with 0 results.

Wouldn't it be beneficial for someone to not just be able to search eye color, but search eye type? For me, the type of eye is much more significant than the color.

Is there something I'm missing?

Updated