I have a hard time really wanting to listen to Pediatricians, especially when I am not an overanxious mother and I find something wrong/different about my child and I'm told there's nothing wrong--when there very well IS something wrong.
My daughter started complaining when she was three years old that light hurt her eyes, to the point she'd cry and beg for us to turn the lights out. Took her to the Ped, who stated that because she has blonde hair and blue eyes, sometimes the eyes are more sensitive. I pushed for a referral and got one to a Ped Opthamologist. Thank God I listened to my own instincts. She had very bad far sightedness and severe Strabismus. The Ped. Opth. asked me if my daughter had had plugged eye ducts when she was a baby. Shocked, I said yes, when she was three months old. He nodded and stated that his research was showing that a large amount of babies who have plugged eye ducts are ending up as candidates for Strabismus.
Thank goodness I listened to my instincts and no one elses, because she is now 11 years old, her eyesight is improving (children who are far sighted are sometimes able to have their eyesight naturally correct--if they wear glasses--as they grow up and often can grow out of needing to wear glasses), and all the hours she spent in front of the computer, playing a special game for her Strabismus, has paid off. And we were able to avoid surgery!
I applaud your actions and hope you discover what the issue is and get it taken care of sooner rather than later--when it might be too late.
Good luck.