A mum who lost vision in one of her eyes following four brain tumours claimed they were caused by a contraceptive jab. Tammy Croston, 47, started using the Depo-Provera injectable medication in 1999 and used the jabs on and off for several years. The woman, from Fife, Scotland , said she stopped when four non-cancerous tumours were discovered inside her skull. The mum lost sight in her right eye following complications in a surgery to remove her brain tumours . Tammy is one of around 11 women