children, while a second study reported no differences. Etymology "Emmetropia" is derived from Greek ἔμμετρος emmetros "well-proportioned" (from ἐν en "in" and μέτρον metron "measure") and ὤψ ōps "sight" (GEN ὠπός ōpos). Translated literally, the term indicates the condition of an eye's having in itself (i.e., without recourse to corrective lenses or other instruments) the capability to obtain an accurate measurement of an object's physical appearance. References Further reading Bernard Gilmartin, 1998. Myopia and nearwork Pg 33-34, Elsevier Health Sciences. Eye Visual system