Rapid vision loss at the age of 50 may be related to senile cataracts, age-related macular degeneration, diabetic retinopathy, etc. 1. Age-related cataract: it is due to degenerative changes in the aging lens, which causes vision loss and refractive changes due to clouding of the lens. 2. Age-related macular degeneration: due to abnormal metabolism causing degeneration of the choroid and pigment epithelium in the macula of the fundus. Clinical symptoms include slow progressive vision loss, blurred vision and other symptoms. 3. Diabetic retinopathy: this condition is common in patients with diabetes mellitus after the age of 50, with no conscious symptoms in the early stage, and with the development of the disease, the retinal blood vessels appear different degrees of lesions, causing vision loss. 50 years old vision loss soon cause more, it is recommended that timely medical treatment, follow the doctor’s instructions and then further relevant examination, in the doctor’s help to clarify the cause, and targeted treatment or treatment.