There is no way to keep your racial abilities
You lose all abilities related to your form while polymorphed:
While under the effects of a polymorph spell, you lose all extraordinary and supernatural abilities that depend on your original form (such as keen senses, scent, and darkvision), as well as any natural attacks and movement types possessed by your original form.
Since you are a druid, one thing to point out is that your magic items still function while wild shaped, as per Polymorph's description:
When you cast a polymorph spell that changes you into a creature of the animal, dragon, elemental, magical beast, plant, or vermin type, all of your gear melds into your body. Items that provide constant bonuses and do not need to be activated continue to function while melded in this way (with the exception of armor and shield bonuses, which cease to function). Items that require activation cannot be used while you maintain that form.
Eye Shadow Piercing (Major) continuously provide see in darkness and should work while polymorphed, as any other magic item that has a similar effect.
Racial darkvision and abilities related to your eyes, such as low-light vision and see in darkness (a supernatural ability) are all removed while polymorphed. This is the text from Blood of Fiends about tiefling's variant racial heritage:
Your eyes glow fiendishly and you possess the see in darkness ability as if you were a devil.
Unless the ability is not related to your physical form
You do not lose all extraordinary and supernatural abilities.
Those abilities that are unrelated to your form, such as ability score increases/decreases, languages known, your creature type, extra feats, extra bonus skills, skill bonuses, spell-like abilities and even mystical effects (like a Samsaran's Shards of the Past, even being Extraordinary) that are related to being who you are and not related to what form you have, will remain even while shapeshifted.
You also lose any class features that depend upon form, but those that allow you to add features (such as sorcerers that can grow claws) still function. While most of these should be obvious, the GM is the final arbiter of what abilities depend on form and are lost when a new form is assumed.
However, as the text says, the GM decides when the rules do not specify the type of the ability.