Ireland's Jason Smyth followed in the footsteps of Usain Bolt tonight by completing a London 2012 sprint double.

The 25-year-old, the fastest Paralympian in the world, added the 200 metres crown to his 100m title with another dominant display.

And he went a step further than the self-confessed Jamaican "living legend" by smashing the world record for the third time in four races at the Olympic Stadium.

The only one in the final to have gone under 22 seconds, this was on paper a formality for Smyth. And so it proved as the sprinter, who trains in Florida with Tyson Gay, the joint second-fastest man of all time, clocked 21.05 seconds, 0.90secs ahead of second place and 0.38s quicker than his old world best mark.

Russians Alexey Labzin and Artem Loginov were the men to fill the minor places.

Victory ensured the Derry athlete, who is visually impaired because of Stargardt disease, has successfully defended both T13 titles he won four years ago in Beijing.

Speaking after his latest victory, Smyth said: "I just tried to concentrate on what was in front of me not behind me. I crossed the line first and that's what is important." 

As he received his gold medal from Lord Seb Coe, the comparisons with other legends of the track had begun but Smyth was keen to point out that he was not done yet.

Smyth said: “To be compared to Usain Bolt, who is probably the greatest athlete in the world at present, is a tremendous honour. I wouldn’t call myself a Paralympic legend yet. I will look towards Rio and there is more to come from Jason Smyth yet.”