i will occlude now the left—eyed... before his pioneering stem cell treatment, douglas waters was completely blind in his right eye. now he can see. "everyone wanted to go outside when the rain finally stopped." that's perfect. so this is an amazing improvement, mr waters. ijust couldn't believe it. each morning, i picked things out in the bedroom to look at out in the garden. i'd do this... it's unbelievable. i'm completely chuffed, i suppose you could say! and so is his surgeon. two patients with age—related macular degeneration had the sight restorming treatment at moorfields eye hospital in london. we're able to show that we've taken someone who could not read at all, they couldn't, in fact, see the book they were reading from, and taken them to reading around 60 to 80 words per minute with their normal reading glasses. for us, this is a fantastic breakthrough. and it could help other patients with age—related macular degeneration, who can lose all their central vision. so what...

tonight at ten: a big step on the road to brexit, as broad agreement is reached on the uk's transition period. relief after a weekend of intensive talks as britain sees opportunities ahead, but the eu warns of major issues yet to be resolved. the deal we struck today, on top of that agreed in december, should give us confidence that a good dealfor the united kingdom and the european union is closer than ever before. translation: a decisive step remains a decisive step. but we're not at the end of the road. no one in westminster bridge tends this is the end, but in government tonight, sighs of relief that the brexit talks have cleared this hurdle. we'll have more reaction. we'll consider the unresolved question of the irish border and the dismay in britain's fishing industry. also tonight: investigators widen their search in the spy poisoning case, as international chemical weapons experts arrive in the uk. the minicab service, uber, suspends all tests of self—driving

so what causes amd? so if we open the eye, the macula is at the back. it's the part of the retina responsible for central vision. if we pull out a section, here are the light—sensitive cells, the rods and cones. amd is triggered when a crucial layer of support cells, seen here in green, die. as a result, patients gradually lose the validity to read or to recognise faces. scientists use stem cells from a human embryo and turn them into the support cells needed. they were put onto a tiny patch like this, which was placed at the back of douglas's eye. you can see it here. the stem cells were paired his vision. the stem cells repaired his vision. regenerative medicine's goal was to restore a person's help. i think this is one of the first indications from generative medicine that that can be achieved. it can stop people from going blind.

it can stop people from going blind. douglas, who is 86, says the stem cell therapy has given him renewed independence. moorfields says it should be no more expensive than other amd treatments, and potentially could help save the sight of thousands of patients. fergus walsh, bbc news. the uk's information commissioner elizabeth denham says she will seek a warrant to look at the databases and servers used by the data mining company cambridge analytica. a former employee at the firm claims they were handed the personal data of 50 million facebook users which was then used to influence the 2016 us presidential election. facebook‘s shares finished nearly seven percent down after a turbulent day on the new york stock exchange. both cambridge analytica and facebook deny any wrongdoing. the itv presenter, ant mcpartlin, says he will seek further treatment

says he will seek further treatment after he was arrested on suspicion of drink driving. he was detained yesterday afternoon following a collision involving three cars in south west london. itv says his saturday night programme with partner declan donnelly will not be broadcast this weekend, as our entertainment correspondent lizo mzimba reports. moments after the mini he was driving was involved in a collision with two other cars, ant mcpartlin at the scene of the crash. when police arrived, he was taken away under arrest after failing a breath test. a number of people were treated for minor injuries, and a child passenger in one car taken to hospitalfor a precautionary checkup. i think it's time for me to say hello... the evening before, ant mcpartlin had been presenting itv‘s saturday night takeaway. he returned to television last year after going into rehab to treat an addiction to alcohol and prescription painkillers. this afternoon, the broadcaster said: