Before Harry boards theHogwarts Expressat the end ofHarry Potter and the Sorcerer ’s Stone(2001),Hagridhands over a homemade scrapbook filled with photos of Harry ’s parents . It ’s the type of film moment cognize to make viewers tear up , and even Daniel Radcliffe did while filming it — but not just from emotion .

As Digital Spyreports , producer David Heyman recently explain in an audience forEmpirethat Radcliffe ’s green contact lenses stimulate an allergic reaction that made his eyes “ puffy and reddened , ” which was “ quite appropriate for the picture . ” It was only the first day of filming , and the allergic reaction was elusive enough that they decided to nix the touch lenses wholly . So Harry ’s eyes are naughty in the final cutting of that scene , though they do look a slight bloodshot .

The fact that Harry hasblue eyesin the film serial has long been a score among diehard fans of the books , which often mention Harry ’s “ bright green ” eyes — the single characteristic he shares with his mother , Lily . Rather than postulate Radcliffe to endure through his allergy or digitally alter his centre color during post - output ( which Heyman said “ felt unreal ” ) , movie maker only cast a blue - eyed actor , Geraldine Somerville , to act Lily . That way , Harry and his female parent would still have standardised eyes , even if they were n’t the right hue .

Daniel Radcliffe at the London premiere of Harry Potter and the Sorcerer’s Stone in 2001.

It was n’t the only element from thebooksthat was altered for ( or totally omitted from ) thefilm adaptations , and many Potterheads have strong impression about what they wish had been entrust in . Heymansharedsome of his own withEmpire : Hogwarts ’ resident poltergeist , Peeves ; Hermione ’s Society for the Promotion of Elfish Welfare ( S.P.E.W. ) ; the Quidditch World Cup biz ; Ron ’s anxiousness - ridden relationship with Quidditch inHarry Potter and the Order of the Phoenix ; and the backstory of the Marauders .

[ h / tDigital Spy ]