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Optical imaging systems find applications from medicine to military, nano chip to deep space. Their imaging efficiency is deteriorated by Aberrations. Aberration theory has very long history of development. Different types of aberrations, different notations of their description are available in the literature. Often a situation of ambiguity arises for an interdisciplinary scholar to understand them. This paper emphasizes the need of commonness and presents an effort to put them at one place.

Aberrations in Theories of Optical Aberrations