The twins' camping trip doesn't quite go as planned when Topsy is rushed to hospital for an operation. Whilst Topsy is recuperating, Tim realises his eyesight is not as good as it should be, so Mummy arranges for him to have an eye test.
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Topsy and Tim is a series of children's books written by Jean Adamson and Gareth Adamson about twins and their adventures. They were first published in 1960 and were relaunched in new editions in February 2003