After the successful completion of cataract surgery, it is generally necessary to review on time one week after surgery as well as one month after surgery to complete the correction of prescription lenses to obtain the best visual effect. If there are any problems, it is necessary to consult the doctor in time and also pay attention to the following aspects: 1. Post-surgery precautions are needed After cataract surgery, daily life is as usual, no need to be bedridden, avoid forceful breath-holding and strenuous exercise, do not use hot and cold towels on the eyes or press the eyeballs. Follow up on time. If you have any special conditions such as eye pain, redness, vision loss, double vision and constant tearing, please go to the hospital promptly. Please avoid the following actions without your doctor’s permission to prevent the eye pressure from increasing and affecting the wound: a. Do not carry children or lift heavy objects or other heavy work. Do not bend down to pick up things or wash your own hair. Do not rub your eyes with your hand or handkerchief. Do not sleep on the open side of the eye. Do not eat hard things, such as melon seeds, fava beans, etc. Do not eat irritating things, such as chili peppers, tobacco and alcohol, etc. If you are constipated, do not exert yourself, and eat more papaya and bananas. Eight, avoid violent coughing. You can do the following things in your daily life: 1. Keep your mood happy. 2. Do not spend too much time watching TV. Eat more vegetables, fruits and drink more water. If your eyes are wet, go home and take some medicine immediately. Five, can do some effortless household chores, such as watering flowers, folding clothes, etc. If you need to sleep on your side, you need to sleep on the unopened side. 2. What are the factors affecting the recovery of vision after surgery? Cataract surgery is equivalent to replacing the lens of a camera, and the final image depends on the goodness of the film, that is, the fundus of the eye. If serious fundus diseases such as age-related macular degeneration, diabetic fundus, highly myopic macular degeneration, fundus hemorrhage, glaucoma optic nerve atrophy, etc. exist before cataract surgery, even if the cataract surgery is very successful, the post-operative vision may not be improved. In most cases, the preoperative fundus cannot be checked due to the blockage of cloudy lens. 3.Why there are black shadows floating in front of the eyes after cataract surgery (flying mosquitoes), especially when there is a bright white background, the symptoms are more obvious, and may be accompanied by a sense of flash, which is called flying mosquitoes. The main cause is vitreous liquefaction and posterior detachment. The incidence of vitreous liquefaction increases with age and eye axis length, and posterior detachment occurs on top of the liquefaction. Before cataract surgery because of poor vision with cataract blockage, flying mosquitoes can not show, after surgery cloudy lens was taken off, vision increased, the situation of the cloudy vitreous behind the lens showed up, so some patients appear after surgery black shadow in front of the eyes or the original black shadow increased. 4 .Why did the vision decrease again after cataract surgery, what is posterior cataract, posterior cataract,? Posterior cataract is not a recurrence of cataract, but a clouding of the original transparent posterior capsule. When the posterior capsule membrane is preserved to support the IOL during cataract surgery, some small amount of residual crystal cortex is mixed with the posterior capsule membrane and slowly forms an opaque mechanized film that affects vision called posterior cataract, or posterior cataract for short. Typically, more than 95% of pediatric patients and more than 30% of adult patients will develop a posterior cataract within 6 months to 2 years after cataract surgery, resulting in vision loss. If the “posterior cataract” is severe, it can usually be cured by laser excision of the posterior capsule. 5. What is laser treatment for posterior cataracts and is it dangerous? Laser cataract treatment usually refers to posterior cataract dissection with a YAG laser. Due to the residual lens cortex after cataract surgery, the regeneration of epithelial cells under the anterior lens capsule, together with the surgical reaction and inflammation reaction with the posterior lens capsule membrane to form an opaque membrane, seriously affects the vision. In this case, the high energy of the YAG laser is used to make a small hole in the center of the pupil area equivalent to the human eye’s visual axis through the posterior capsule membrane, revealing a transparent area, and the patient’s vision will immediately improve. The advantages of YAG laser treatment for posterior cataract are: safe and reliable, easy to operate, no surgery, painless for patients, and vision recovery can be “immediate”. 6. After cataract surgery in one eye, why is it good to have surgery in the other eye as soon as possible? Patients often feel eye discomfort after one eye surgery, including eye dryness, foreign body sensation, eyes like there is something in them, seeing things with slightly different colors or even white and blue vision. In fact, this is the result of the interference of the non-operated eye with the vision of the operated eye. If the other eye is operated as soon as possible, many people’s original discomfort disappears quickly. Especially for highly myopic patients, it is important to choose to operate as soon as possible in order to get good binocular vision with glasses as soon as possible after surgery.