What are the four foundation elements of supply chain management? The four foundation elements of supply chain management are  purchasing, production, logistics and processing or collaboration  between trading partners.
Short-sightedness (myopia) Other people have eyes that are too long, so the light focuses in front of the retina (they are short-sighted). This means that they cannot see things clearly if they are far away from them (such as the TV or board at school).
Nearsightedness (myopia) is a common vision condition in which you can see objects near to you clearly, but objects farther away are blurry. Nearsightedness may develop gradually or rapidly, often worsening during childhood and adolescence.