‘Yǎn jīng’ literally means ‘eye’—the physical organ of sight. The first character, 眼 (yǎn), is the general term for ‘eye’ and appears in many compound words like 眼镜 (yǎnjìng, glasses) and 眼泪 (yǎnlèi, tears). The second character, 睛 (jīng), specifically refers to the eyeball or the clear, central part of the eye (often used in classical or literary contexts); on its own, it’s rarely used in modern spoken Chinese. Together, 眼睛 is the standard, neutral, and most common noun for ‘eye’ in everyday Mandarin—used for humans and animals alike.

This word is countable and typically appears with measure words like 只 (zhī) for singular (e.g., 一只眼睛) or 对 (duì) when referring to the pair (e.g., 一对眼睛). It frequently appears in health-related expressions (e.g., 检查眼睛, ‘get an eye exam’), descriptions of appearance (e.g., 大眼睛, ‘big eyes’), and idioms (e.g., 画龙点睛, ‘adding the finishing touch’—literally ‘dotting the dragon’s eyes’).