Scientists in China have developed eye drops derived from pig semen that stopped tumour growth in the retinas of mice, in a finding that could one day spare children with a potentially lethal eye cancer from the invasive injections and chemotherapy that currently define their treatment.
The study, published on 27 March 2026 in the peer-reviewed journal Science Advances, was led by Yu Zhang and colleagues at Shenyang Pharmaceutical University in north-east China, targeting retinoblastoma, the most common intraocular cancer in children.
