title: The algebra of sphero-cylinders.
abstract: Sphero-cylinders are shown to be representable by formal vectors. An algebra applicable to sphero-cylinders is stated and mathematically consistent operations are defined. Examples of practical applications of some operations are given.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000375:Aging; D002648:Child; D002675:Child, Preschool; D006801:Humans; D008433:Mathematics; D008875:Middle Aged; D008954:Models, Biological; D009907:Optometry; D012029:Refraction, Ocular; D012030:Refractive Errors / Q000503:physiopathology