YOU could be forgiven for thinking you are witnessing an optical illusion with these pictures of twins Rosemary Munro and Margaret Scruby. And although they’re identical, the 62-year-old harp-playing sisters are mirror-image twins, meaning they have many opposite traits. Mrs Munro, from Appleton, is left-handed whereas Mrs Scruby, from Botley, is right-handed. Each has one lazy eye, but opposite to each other and they both suffer from arthritis but in an opposite foot. As mirror image twins they are termed monozygotic twins – created when one fertilised egg splits at least a week after conception leaving the babies to develop some reverse asymetric features.