stigmatism

definition: normal eyesight
example:
speech part: noun
synonyms:
definition: (optics) condition of an optical system (as a lens) in which light rays from a single point converge in a single focal point
example:
speech part: noun
synonyms:
definition: the condition of having or being marked by stigmata
example:
speech part: noun
synonyms:

How stigmatism is being used?