There are not too many eye related complications following tonsillectomy
. If his eyes are not red, watery or sticky there does not seem to be any cause for worry. If at all, during the procedure, there may be some dryness in the eyes as the procedure is done under general anaesthesia
and the eyes could have been partially open. Eye drops recommended are Lubricating eye drops used 4 to 5 times in both eyes. It should resolve after a few days.