Police in Rome say seven men were injured. Five were British, one Californian and one Bangladeshi.
A group of about 40 or 50 people in motorcycle helmets or with their faces covered were armed and attacked the group of English football fans drinking in Campo de Fiori square. The more seriously injured seems to be the Briton born in 1987. The American was born in 1982.
More top news
People could suffer vision loss or infection from the lenses, which are often sold illegally online, in shops and on market stalls.
Between 2011 and 2014 reports of self-harm among British girls aged between 13 and 16 rose by 68%, according to new research.
Justin Trudeau has paid a tearful tribute to Gord Downie, the lead singer of Tragically Hip, who died aged 53 from brain cancer.