The aim of this study is not only to fully understand the senile involution of retinal structures, which allows us to observe the wonders of the world, but also to keep these structures intact for as long as possible. According to the theory of aging, the level of senescence is determined by the interaction between factors that promote aging and those that counteract it, in practice by the cellular regeneration capacity that is under genetic control. From this point of view, the ''theory of physical deterioration" can be unified with another aging theory, that of the ''biological clock.'' This theory asserts that the life expectancy of each species is genetically determined and that variations are the result of environmental influence or genetic mutations.
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