Ask an expert
Question

11 Jul

Bright light effect the iris
If you were to constantly shine a bright light from a mobile phone torch close to the iris , could the heat and light have an effect on the pigments (melanin) in the iris causing the iris to turn darker in colour, in the same way, sunlight can affect the pigments (melanin) in the iris
Voting Booth
Have you entered our Health of the Nation survey?
Please select an option Oops! Something went wrong, please try again later.
Results
Yes
30% - 9699 votes
No
70% - 23149 votes
Vote