• Question: what causes colour blind.

    Asked by to Roy, Kate, Rowena on 18 Mar 2014. This question was also asked by , .
    • Photo: Kate Nicholson

      Kate Nicholson answered on 18 Mar 2014:

      Slightly different shaped cones or lower number of cones on your retina (the specialised cells at the back of your eye that see colour). It is genetic and unfortunately mostly males who suffer from it because the gene is not carried on the Y chromosome, so if you get the misshapen version from your mothers genes then there is no matching dominant gene from your father to make the normal colour vision result.

    • Photo: Rowena Fletcher-Wood

      Rowena Fletcher-Wood answered on 21 Mar 2014:

      It’s genetic and an X chromosome thing so men are more prone to it… Cines in your eyes are in the wrong places or intensities.

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