Call your doctor immediately if you have a drooping eye that:
Develops suddenly over a period of a few days or a few hours
Is accompanied by double vision, weakness of your facial muscles, weakness in your arms or legs, difficulty speaking or swallowing, or a severe headache
Is accompanied by symptoms of an eye infection, including pain and redness in the eye, fever, a bulging eye, or difficulty moving the eye.
Also, make an appointment to see your primary care doctor or ophthalmologist (doctor who specializes in eye problems) if your eyelids have begun to droop with age and this interferes with your vision or seriously affects your appearance.
Make an appointment with your pediatrician or ophthalmologist if your baby's eyelids look uneven, if one eye appears to be smaller than the other, or if your child seems to hold his or her head in an abnormal posture (usually chin tilted upward) in order to see.