Traits

Main colored portion of the eye is shaped abnormally

Added with Coconut Juice

different colored eyes

Added with Tri Fruit

"whites" of the eyes are darkly colored

Added with Night Beetle

2 (or more with multi eyes) different eye types

Added with Frog Cookies

3 or more eyes on a single nyaanpon. extra eyes can be placed anywhere

Added with Slimy Ick

iris is 2 seperate colors and pupil is a third, different color. must have neon eye highlights

super cute eyes filled with shapes

eyes that glow in the dark

Related items: 

eyes that are missing iris and pupils. can not be used with dark scalera 

Added with Rhur Flower

eyes with a large iris with one huge highlight and lots of sparkles

Added with Rose Orb

darkly colored eyes with no scalera. does not have pupils

Added with Infinite Marble

pupils that are any other shape than round

Related items:

differently shaped iris 

Added with White Pearls

a flame munchie's eyes blaze with fire

Added with Bottled Wisps

multiple eyes on a taechie

eyes with multiple rings

Added with Fruit Parfait

abnormally shaped pupils

usually darkly colored eyes with no scalera or pupils

eyes that are as dark as, or darker, than the shadow face

eyes that are lighter than the shadow face