Clinical symptoms, as well as auxiliary examination, can be used to determine the cleanliness of the stones after flexible lens surgery. 1. Clinical symptoms: after soft lens surgery, symptoms such as back pain, nausea and vomiting, frequent urination, blood in the urine, etc. gradually reduce and disappear, most of them are the normal process of disease recovery, if the symptoms persist after the surgery without relief, it may be that the stones are not discharged cleanly. 2. Auxiliary examination: after soft mirror surgery, you can carry out imaging examination, such as X-ray, CT, B ultrasound, etc., which can also determine whether the stones are clean or not. After soft mirror surgery, you should follow the doctor’s instructions for treatment, and drink more water, urinate regularly to promote metabolism, and actively go to the hospital for further diagnosis and treatment if you have any uncomfortable symptoms.