emmetropyn.

/ɛˈmɛtrəpi/Origin: A borrowing from Latin. Etymon: Latin emmetropia.
Etymology: < scientific Latin emmetropia emmetropia n.; compare -y suffix3.
Physiology.
the world > physical sensation > sight and vision > types of vision > [noun] > normal
1880 J. Le Conte 46 This normal condition is called emmetropy.
This entry has not yet been fully updated (first published 1891; most recently modified version published online June 2022).