The reason that retinal detachment is so critical is that it is a potentially blinding disease. The retina depends on two blood supplies to function properly and allow one to see. The first blood supply is within the retina. The second is on the back wall of the eye.
Internalisation (or internalization) in sociology and other social sciences is the process of acceptance of a set of norms and values established by people or groups which are influential to the individual through the process of socialisation.
Socialization the process by which an individual acquires specific knowledge and values and accepts standards that enable him to function as a full and equal member of society. Socialization includes the socially imposed processes of the purposeful shaping of personality (upbringing) as well as the inherent and spontaneous processes that affect the formation of personality. There is a wide range of theories on socialization.