A toddler is at risk of losing her vision due to a rare brain tumour - after her "droopy" eyes raised alarm bells.<br /><br />Little Della Messenger, two, was at an appointment to check her heart - but the doctor was more concerned by her eyes.<br /><br />One in particular was slightly "droopy" so he booked her in for a full eye scan - which showed one of her eye nerves was particularly swollen.<br /><br />Della was then diagnosed with a benign brain tumour called optic pathway glioma pressing on her optic nerves.<br /><br />Worried parents Raegan Brady, 31, and Alex Messenger, 30, were warned the non-cancerous tumour had been causing their little girl's eyesight to deteriorate.
