where brown eyes lighten to a hazel shade, "usually doesn't happen." A stock image of a close-up of a woman's eye. "Eye color is complex and is controlled by 16 different genes," Dr. Rupa Wong ...

They show the complex and intricate textures hidden within the iris that give our eyes our unique and enchanting ... and in rarer cases, hazel, grey, violet, or even pink. Mr Manvelyan's pictures ...

Victoria, who has to manually close Hazel's eyes to give them a rest ... paralysed – she is unable to blink and can move her eyes up and down, but not side to side. "Getting the diagnosis ...

Brown eyes are rich in melanin, which not only gives them their color but also provides natural UV protection. Hazel eyes are a mix ... but they occasionally pop up in other populations.