瞳距

tóngjù

noun

Meanings

1 pupillary distance (PD)
2 interpupillary distance

Characters

pupil (of the eye)

Examples

HSK 4

配眼镜时需要测量瞳距。

Pèiyǎnjìng shí xūyào cèliáng tóngjù.

When fitting glasses you need to measure pupillary distance.

HSK 4

我的瞳距是六十二毫米。

Wǒ de tóngjù shì liùshí èr háomǐ.

My pupillary distance is sixty-two millimeters.

Tips

usage

Standard term at the optician's. The lab abbreviation PD (from English 'pupillary distance') is also written directly on prescriptions. Adult range is roughly 54-74 mm.

Stroke Order

瞳 tóng

距 jù