The T12 category is for athletes with visual impairment.

Athletes in this category will generally have some residual sight, the ability to recognise the shape of a hand at a distance of 2 metres and the ability to perceive clearly will be no more than 2/60.

T12 athletes commonly run with guides.

The Athletics at the 2016 Summer Paralympics – Men's 400 metres T12 event at the 2016 Paralympic Games took place on 8–9 September 2016, at the Estádio Olímpico João Havelange.

11:56 8 September 2016:[1] 12:04 8 September 2016:[1] 12:11 8 September 2016:[1] 12:18 8 September 2016:[1] 18:38 8 September 2016:[2] 18:46 8 September 2016:[2] 19:31 9 September 2016:[3]