English

entoptic

From ent- + optic.

A compound of ent- + optic

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁éntos

Proto-Hellenic *entós

Ancient Greek ἐντός ‘within, inside’

English ent-

Middle French optique

English optic

Today it means

adj Located within the eyeball.

Language periods are conventional ranges, not dates for this word.

Etymograph / entoptic