Xiāntiānxìng shīmíng shì zhǐ chūshēng shí jiù kàn bu jiàn de qíngkuàng.
Congenital blindness refers to the condition of being unable to see from birth.
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grammar
先天性 functions as an attributive adjective before nouns: 先天性疾病 (congenital disease), 先天性缺陷 (congenital defect). It contrasts with 后天性 (acquired, postnatal).
