The 29th Congress of Chinese Ophthalmological Society (CCOS2025), hosted by the Chinese Medical Association and the Ophthalmology Branch of the Chinese Medical Association, organized by the Zhejiang Medical Association, and coorganized by the Zhejiang University Ophthalmology Hospital (Zhejiang University Second Hospital Ophthalmology Center), is scheduled to be held from September 4-7, 2025 at the Hangzhou International Expo Center. This conference is another large-scale ophthalmic event held in China, with an expected attendance of over 10000 representatives. At that time, more than 1000 renowned international and domestic ophthalmic experts will give special presentations on new technologies, knowledge, and experiences in the development of ophthalmology. Ophthalmologists from all over the country will gather at this grand event to exchange and share the latest research achievements in ophthalmology and visual science with their domestic counterparts. The conference will also hold an exhibition of ophthalmic medical equipment and drugs.