If an elderly person with high myopia who has undergone cataract surgery and macular surgery has blurred vision again, it should be considered to be caused by posterior cataract or aggravation of fundus lesions. After cataract surgery, the posterior capsule of the patient’s lens is usually preserved to facilitate the implantation of IOLs. However, the preserved posterior capsule may become cloudy over time, resulting in posterior cataract, which will lead to a decrease in the patient’s visual acuity, which can be restored by cutting the cloudy posterior capsule through laser treatment. If the patient has a history of high myopia and has had macular surgery, it cannot be ruled out that it is caused by the worsening of the fundus lesions, which can be diagnosed by ophthalmologic examination with fundoscopy in the hospital. Blurred vision may also be caused by other reasons, and it is recommended that patients seek medical treatment as soon as possible to avoid delaying their condition.