DD is 5 and bee using patches for about 18 months which has helped her enormously for a squint. They said they use them until eye sight no longer improving and this has stopped now but told to keep using the patches. Her squint is still v noticeable but haven't mention corrective surgery which my brother and nephew have had at a much younger age. When do they do surgery? I don't really want her to have to undergo this but worry about the teasing etc. Is there a cut off age? Should I mention it?