my son 2yrs 6months old is having a small pimple inside the lower eyelid of his righteye and as a result a bump down it.i took him to a doctor andhe advised me to instil 1 drop of fucithalmic viscous eye drops twice everyday for the next 7 days. i have completed the dosage but still it is there.now i am worried and i need suggestions and the next steps to proceed from an opthamologist.iam very much worried since he is too young.