A Hong Kong teacher-turned-publisher was jailed for nine months after pleading guilty to unlawful assembly on Monday, more than three years after being shot in the eye by police during a protest.

Raymond Yeung Tsz-chun, 32, lost 95 percent of sight in his right eye after it was hit by a police projectile during one of the first protests in what would become a huge, sometimes violent pro-democracy movement that upended the financial hub for months.