I find it hard to distinguish between certain colours
A 'normal' sighted person distinguishes 1.5 million shades of colour. A person with colour blindness perceives 300,000 colour shades or only 20% compared to a 'normally' sighted person. Colour blindness is always inherited and consists of a deficiency of the green, red or blue cones.
People who are missing green cones have 'Deuteranopia', those missing red cones have 'Protanopia' and those missing blue cones have 'Tritanopia'. Colour blindness is not a disease but an abnormality of colour vision. However, this abnormality may affect you as an adult in e.g. daily tasks or you may perceive it as a limitation compared to others. This abnormality may also occur in children or young adults.
Wouldn't it be nice to see life through a colour filter? Like children going to the fair or spending time in a toy or candy shop every day. A whole new world opening up. It is possible!