Ask your pediatrician or family physician to refer you to an Eye MD or go to www.geteyesmart.org and find an Eye MD near you. Only an exam can determine the cause
JCH MD
Hi
How long has she had this for?
If its only just happened, have you tried an eye bath and golden eye ointment? If its longer and you have tried these things, its probably worth getting her to the doctor or optician to check she doesn't have something in her eye or trapped under her eye lid which is scratching her eye. Corneal scuffs should heal very quickly once a foreign body is removed - they shouldn't continue.They can put some drops in to help show what is going on.