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, medically known as myopia (my-OH-pee-uh), refers to vision that is good at close range but poor at a distance. Nearsightedness generally occurs because the eyeball is too âlongâ as measured from front to back â being oval-shaped instead of being spherical. Because of the increased distance between the cornea and retina, light converges in front of the retina, rather than on it, making distant objects blurry.