Jonathan Wyatt, who has a rare inherited eye disease, is one of the participants of a landmark gene therapy to treat blindness.
The 65-year-old barrister said learning he was going blind was a "sledgehammer blow" but there has been "substantial improvement" in his left eye which was treated as part of the trial.
"Now when I watch a football match on the TV, if I look at the screen with my left eye alone, it is as if someone has switched on the floodlights. The green of the pitch is brighter, and the numbers on the shirts are much clearer.
"I am extremely grateful to Professor MacLaren and his splendid team for all the care I received as a “guinea pig” in this groundbreaking research".
More top news
The prime minister said "tough new rules" will be introduced to tackle the behaviour of executives who put their workers' pensions at risk.
The musician, whose career spanned six decades and included 18 years with The Kinks, died on Saturday after a fall.
A group of soldiers has broken an Antarctica record by becoming the first all-female team to cross the continent using only muscle power.