big bump on eye

Mommy of 2 Princesses❤👗

this bump on her eye has been there for months! Idk why it won't go away, i take her to doctors and they tell me there's nothing they "should" do because there is no pain by it but she has had this om her eyes for months its obviously not normal? any suggestions?? she's 3. it looks like a big style and the only pain I hear from her is when we outside and she said that sun hurts her eye with that bump on it