Explore each form from the oldest known stage to today.
The character "眼" is a phono-semantic compound, formed during the Warring States period in China. Its semantic component is the "目" radical, which is a pictograph of an eye, indicating the character's meaning is related to vision or the eye. The phonetic component is "艮" (gèn), which was chosen to suggest the pronunciation in Old Chinese. The original meaning of "艮" is "to stare" or "unyielding," a concept that aligns thematically with the fixed, gazing nature of an eyeball, making it a fitting, albeit not purely phonetic, component. Historically, "眼" was created to specify the meaning of "eyeball" or "eye socket," distinguishing it from the more general "目" (eye). It first appeared in the small seal script (小篆) and evolved through clerical script (隷書) into the standard and regular script (楷書) used today. The character's development shows a stabilization of its left-right structure, with the "目" component becoming slightly narrower. "眼" was introduced to Japan in waves, primarily through the importation of Chinese texts like the *Kojiki* and *Nihon Shoki* during the Asuka and Nara periods (6th-8th centuries AD). It was adopted into the Japanese writing system as a kanji (on'yomi: ガン, ゲン; kun'yomi: まなこ, め). A key linguistic note is the nuanced distinction between "目" (me) and "眼" (gan/manako). While "目" is the common, general term for "eye," "眼" is more technical, often referring to the eyeball as an organ or used in scientific and medical contexts (e.g., 眼科 - ganka - ophthalmology). The kun'yomi "manako" carries a literary or emotional tone, sometimes implying the mind's eye or one's gaze.