Definition
散光 is a separable verb-object compound (离合词) with two main meanings: physically, it means 'to diffuse or scatter light'; medically, it means 'to have astigmatism' (a common eye condition where light doesn't focus properly). As a separable verb, you can insert a measure word or other element between 散 and 光, e.g. 散了一次光 ('diffused light once'). In the medical sense, it's frequently used as a verb-equivalent: 他散光 means 'he has astigmatism'.
v.o.
to diffuse light (physically, e.g. of a lens or surface)to have astigmatism (medical condition of the eye)
Examples
- 散光。Zhè zhǎn dēng de guāngxiàn jīngguò biǎomiàn chǔlǐ huì sǎn guāng.The light from this lamp will diffuse after surface treatment.
- 散光，。Wǒ péngyou liǎng zhī yǎnjing dōu sǎn guāng, xūyào dài yǎnjìng.My friend has astigmatism in both eyes and needs to wear glasses.
- ，。Zhège guāngxué yíqì sǎn le yí cì guāng, ránhòu huīfù le zhèngcháng.This optical instrument diffused light once and then returned to normal.
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