Evan's Eyes

For the past few days we have noticed that Evan's left pupil is sometimes smaller than the right and occasionally his left eye lid also droops. This only happens a few times a day for a couple of minutes. After taking him to his pediatrician, today we took him to a pediatric opthamologist (a medical eye doctor) where he was diagnosed with physiologic anisocoria. Nothing serious, most likely he had this at birth and will continue to have it. I'll have to do more research. He will be looked at again in another month. His droopy eye lid is slight. If it wasn't slight then he would do more testing. Basically his eyes were dialated and his pupils were normal in dark and normal light. I usually only see it in bright light.