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, or myopia, as it is medically termed, is a vision condition in which close objects are seen clearly, but objects farther away appear blurred. Nearsightedness occurs if the eyeball is too long or the cornea, the clear front cover of the eye, has too much curvature.