Cataract is the most common disease of visual disability, and with the aging population in our province, the proportion of new cataract patients is increasing year by year. Ophthalmologists warmly suggest that there is no drug that can treat cataracts in the world so far, and surgery is the only effective way to treat cataracts. What is cataract? Cataract is the most important blindness-causing eye disease in China. A cataract is a condition in which the lens of the eye turns from clear to opaque, blocking light from entering the eye and thus affecting vision. The initial cloudiness has a significant impact on vision, which gradually worsens until vision is significantly affected to the point of blindness. What symptoms may be cataracts? Progressive vision loss without pain or perception. It starts with blurred vision and progresses to blindness. It can also be characterized by increased myopia and the need to change glasses frequently, double vision in one eye, fixed black shadows in front of the eyes, grayish and dark vision and photophobia. The onset of the disease often occurs in both eyes, and the time and degree of onset may vary. What factors can trigger cataracts? The exact cause of cataracts is not known, but may be related to ageing, genetic factors, excessive exposure to ultraviolet light, excessive alcohol consumption and smoking, high blood pressure, diabetes, high myopia, trauma and certain inflammatory diseases in the eye. What group of people is prone to cataracts? It most often occurs in elderly people over 50 years old, and the older the age, the higher the incidence. Cataracts appear relatively early in patients with diabetes or high myopia. In addition, cataracts may also occur in some younger patients, newborns, and infants. Is cataract medication effective? It is currently in the research and exploration stage both at home and abroad, and so far there is no drug in the world that can treat cataracts. Some medications may only serve to slow down the development of cataracts, but cannot cure them completely from the root. Therefore, surgery is the only effective way to treat cataracts.