The indications for cataract surgery are not based solely on visual acuity, and there is no such thing as how much vision is best suited for cataract surgery. Cataract surgery can be considered when there is significant clouding of the lens and vision is interfering with normal life. Cataracts are a visual disorder caused by clouding of the lens. Cataracts cause a painless and progressive loss of vision, and patients with visual acuity less than 0.3 can undergo surgery, as 0.3 falls under the category of low power. However, the reality is not limited to this indicator. Surgery is an option when vision affects the patient’s normal life. Cataract surgery includes ultrasonic emulsification cataract aspiration, femtosecond laser-assisted ultrasonic emulsification cataract aspiration, and artificial lens implantation, etc. Prior to performing the surgery, the surgeon will take into account the patient’s specific situation and recommend the appropriate surgical method.