title: Near image size magnification for optical instruments in general.
abstract: A previous article derives expressions for coefficients and magnifications for an arbitrary optical instrument in front of an arbitrary eye and for near object points. The purpose of this note is to correct an error in the interpretation of a parameter in that article, to show that the expression derived there for near image size magnification holds only under particular conditions, and to modify the expression so that it holds in general.
authors.affiliation: Optometric Science Research Group, Department of Optometry, Rand Afrikaans University, PO Box 524, Auckland Park, Johannesburg, 2006 South Africa. wfh@na.rau.ac.za
authors.forename: W F
authors.initials: WF
authors.lastname: Harris
mesh_terms: D000065:Accommodation, Ocular; D003261:Contact Lenses; D005139:Eyeglasses; D006801:Humans; D008027:Light; D008433:Mathematics; D008962:Models, Theoretical; D055095:Optics and Photonics / Q000295:instrumentation*; D012029:Refraction, Ocular; D012160:Retina / Q000502:physiology; D014785:Vision, Ocular