We found out yesterday that my 12 month old son has accommodative esotropia. His doctor said he is severely farsighted. He prescribed him glasses one eye is 3.75 and the other is 5. We are trying glasses before surgery. The doctor gave me some papers on his condition and one of the cause could be a brain tumor. I was just wondering if anyone know how they rule out that possibility and if they are any other signs of something as serious as a brain tumor I should be looking for? I plan one calling the doctor on monday, but now I'm worried.