My son's left eye constantly blinks, can you help me?

[sym29]

My 3 yr. old son's left eye constantly blinks, this happened after he was punched by another 3 yr old toddler on his left eye. We brought him to the pediatrician but the pediatrician forwarded us to a pedia-opthalmologist. the doctor didn't see any substance inside the eye, the eye is clean. he just gave us an antibiotic drops but my son's left eye still blinks after a week now. what could have been the cause of this and can you help me because my wife and I barely get enough sleep or work normally because we kept on thinking about our son's situation.

[sym29]

thanks for the response.
Actually he is not complaining about it, he still plays with those kids. his eyes are normal when he's asleep. That disorder went out for 3days ang came back.

[venustiana]

If it was my child   I would call the doc. again and if he doesn't do anything I would get a second opinion.  Something has to be causing that. I'm a teacher of 3yrs old kids and I don't think he's doing that on purpose. Maybe he  can't control the eye muscle. Is he complaining about it? Is he afraid of going back to where he was with that other 3 yrs old kid? Have you noticed if his eye moves while he's asleep? Is he sleeping ok?