A five-year-old boy went to the opticians for stronger glasses after experiencing "fuzzy eyes" during his first few weeks at school — only to be diagnosed with an aggressive brain tumour . Teddy Hemms, five, appeared completely healthy when he went to his appointment. However, the eye examination uncovered swelling behind his eyes — later diagnosed as grade four medulloblastoma, a highly aggressive form of brain cancer . Surgery revealed Teddy, who had only recently started school, had multiple