Ewan has an astigmatism

What is astigmatism you may ask. Well I did. Apparently his cornea is football shaped and it should be round which means he has two focal points, hence some things are blurred. What do we do about this. Glasses probably or possibly. Ewan doesn't seem to be having a problem at the moment but I wouldn't really know. I don't know what stage he should be up too. We have parent/teacher talks at the end of March. I suppose will be know more then.