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<b>Did you know there are several different types of colour blindness ?</b><br>
<b>-</b> Tritanopia : absence of blue pigment (short wavelength sensitive).<br>
<b>-</b> Tritanomaly : deficiency or abnormality of blue pigment.<br>
<b>-</b> Deuteranopia : absence of green pigment (medium wavelength sensitive).<br>
<b>-</b> Deuteranomaly : deficiency or abnormality of green pigment.<br>
<b>-</b> Protanopia : absence red pigment (long wavelength sensitive).<br>
<b>-</b> Protanomaly : deficiency or abnormality of red pigment. <br>
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