Dark spots in vision, loss of vision, blurred vision, and a feeling of glare in vision are the initial symptoms of cataract. 1. Dark spots in vision: In the early stage of cataract, there will be dark spots in the direction of eye gaze, and these dark spots will not move with the movement of vision. 2. Loss of vision: In cataract, the refractive power of the crystalline lens may change, resulting in a loss of vision, which sometimes tends to myopia. 3. Blurred vision: Cataracts can lead to blurred vision because of the clouding of the lens, which makes it difficult to see things. 4. Glare: cataract because of lens clouding, refractive media changes may lead to light scattering in the eye, causing glare. In daily life, we must pay attention to eye hygiene, maintain correct eye habits, and eat more fresh vegetables and fruits. When changes in vision occur, it is recommended to go to the hospital in time for examination and follow the doctor’s instructions.