Tā yǎnjing zhǎng le jiǎnxiànyán, yòu hóng yòu zhǒng.
He developed a stye on his eye - it's red and swollen.
Tips
usage
The medical term. In casual speech, Chinese speakers more often call a stye 麦粒肿 (màilìzhǒng, 'wheat-grain swelling') or 针眼 (zhēnyǎn, 'needle-eye') - both describe its small, pointed appearance.