@CNN: A rare eye condition helped Leonardo da Vinci paint distance and depth of objects on flat surfaces with the accuracy which he became famous for, new research claims https://t.co/6kGt7eKxWp https://t.co/B1Eh5qn6Gu

@CNN: A rare eye condition helped Leonardo da Vinci paint distance and depth of objects on flat surfaces with the accuracy which he became famous for, new research claims https://t.co/6kGt7eKxWp https://t.co/B1Eh5qn6Gu