[Marion Stewart]

Marion Stewart  asked the Naked Scientists:
   
Never miss your spot on radio 720 SA. Athough I live in Botswana. 

My brother in law in England started off life with brown eyes and at about the age fo 55 they changed to bright blue.  He owns a yacht and sails and I have heard that being at sea a lot can change the colour of your eyes.  all my friends laugh at this but...

kind regards   marion stewart

What do you think?

[RD]

The apparent colour of eyes (or anything else) depends on the context ...
http://www.thenakedscientists.com/forum/index.php?topic=17822.msg201320#msg201320

e.g. eyes may look a different colour in artificial light than when seen in natural light.

[Hels]

My dog started off with blue eyes, but now has hazel eyes ... clearly not an old sea dog! (Actually, for the first year I had her, she didn't know what "walk" meant, as she only recognised "beach" and occasionally "woods" - when the summer season started and the grockles came down, banning dogs from the beach - roll on October when we get our beach back)