Colour vision deficiency happens when the cells in our eyes (called photoreceptors) do not “see” the differences in the wavelengths that people without colour blindness perceive as colours and colour differences.

An occasional night of drinking may not have permanent effects on your health. However, regular heavy drinking has severe consequences.

Want look and feel young into your 40s and beyond? Now’s the time to hit the refresh button with these common mishaps and tips to get you on track.