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).
1. presbyopia-a reduced ability to focus on near objects caused by loss of elasticity of the crystalline lens after age 45. farsightedness. hypermetropia, hypermetropy, hyperopia, longsightedness, farsightedness-abnormal condition in which vision for distant objects is better than for near objects.