The 'color' of food helps us to distinguish whether the food is ripe or rotten. It is also known that people tend to prefer meals with colorful foods, but some people with color vision deficiency have ...

Generally, people identify one million colors, but it is thought that there are people in the world who have 'four-color type color vision ' that identifies 100 million colors, which is 100 times that ...

Iron is an essential mineral that plays a critical role in overall health, particularly in maintaining healthy eyes and clear vision. It is a key component of haemoglobin, the protein in red blood ...