If you 've ever wanted to have Daniel Craig 's steely gaze or Angelina Jolie 's sultry stare , a new laser treatment could be the answer . A Californian company says it hopes to offer a $ 5,000 ( £3,400 ) medical procedure that can transform any eye colour to blue , permanently . The technique , which is currently undergoing clinical trials , works by using something known as 'scavenger cells ' to digest and remove the pigment from the iris surface . Scroll down for video . The technique , which is currently undergoing clinical trials , works by using something known as 'scavenger cells ' to digest and remove the pigment from the iris surface . A specific laser frequency passes through the clear cornea of the eye , before it is selectively absorbed by the dark pigment covering the iris . The procedure applies a computer-guided , low-energy laser to the iris to disrupt the brown pigment . A specific laser frequency passes through the clear cornea of the eye , before it is selectively absorbed by the dark pigment covering the iris . This causes the body to 'initiate a natural and gradual tissue-removal process . Once the tissue is removed , the patient 's natural blue eye is revealed , ' explains the website . By removing the pigment , light can enter small fibres in the eye . When the light scatters , it only reflects back the shortest wavelengths , which appears blue . 'Under every brown eye is a blue eye , ' Dr Gregg Homer , chairman and chief scientific officer at Strōma Medical said . 'The only difference between them is that a brown eye has a thin layer of pigment covering the blue iris . ' The procedure applies a computer-guided , low-energy laser to the iris to disrupt the brown pigment . A specific laser frequency passes through the clear cornea of the eye , before it is selectively absorbed by the dark pigment covering the iris . This causes the body to 'initiate a natural and gradual tissue-removal process . Once the tissue is removed , the patient 's natural blue eye is revealed , ' explains on its website . By removing the pigment , light can enter small fibres in the eye . When the light scatters , it only reflects back the shortest wavelengths , which appears blue . According to Strōma Medical , the process takes 30 seconds , and around two weeks eyes become blue . So far , 17 patients in Mexico and 20 in Costa Rica have undergone the treatment . The company hopes to trial a total of 100 patients over the next few years . . If you 've ever wanted to have Daniel Craig 's steely gaze ( right ) or Angelina Jolie 's sultry stare ( right ) , a new laser treatment could be the answer . A Californian company says it will soon be offering a $ 5,000 ( £3,400 ) medical procedure that can transform any eye colour to blue , permanently . Saj Khan , an ophthalmologist at the London Eye Hospital , told CNN that the procedure could clog up the eye 's normal drainage channels . This can in turn cause the pressure inside the eye to go up , ' he said . 'If that happens significantly enough , for long enough , it 's how patients develop glaucoma , ' he said . 'We were concerned about this issue right from the start , so it was the first issue we tested and measured in our initial pre-clinical and clinical studies , ' the company wrote on their site . 'Thus far , pigmentary glaucoma has not proved to be a problem in our pre-clinical or clinical studies . ' Dr Mark Korolkiewicz , an optometrist and clinical services director at Ultralase , a nationwide laser vision correction specialist , says that there are fundamental differences between the Stroma laser procedure and corrective laser eye surgery . By removing the pigment , light can enter small fibres in the eye . When the light scatters , it only reflects back the shortest wavelengths , which appears blue . The basic rule of thumb is that as soon as you go inside the eye with a laser , you can cause more damage , ’ he says . ‘ We only use lasers on the cornea , the surface of the eye . This new treatment involves using a laser inside the eye. ’ 'Our procedure is limited to the treatment of stromal pigment , ' Dr Homer told DailyMail.com . 'It does not dislodge or even contact any of the the `` iris pigment epithelium '' or IPE on the back side of the iris . 'In addition , our procedure does not actually remove any pigment . 'The proof , as they say , is in the pudding . We are now well into our clinical trials , and thus far , there has been no intraocular pressure increase in any subject . ' But it may be the moral question which gives people most pause for thought . Dr Homer , who has Jewish roots himself , rejects he is promoting blue eyes over brown . ‘ I ’ ve heard the eugenics remark a few times , but I don ’ t understand it . Is the charge that there is something racist about giving people the option to have blue eyes ? ’
A low-energy laser is applied to the iris to disrupt the brown pigment . This causes body to trigger 'scavenger cells ' to remove dark colours . Process takes 30 seconds , and two weeks later eyes will become blue . 20 patients in Mexico and 17 in Costa Rica have undergone treatment . Process , which is undergoing clinical trials , has raised safety concerns .