lateral canthoplasty

Opening the outer corner of the eye is a big open surgery. The opening of the outer corner of the eye is mainly performed under local anesthesia, and the incision is determined according to the degree of enlargement required for the splitting. Opening the outer corner of the eye can make the eye banner longer by 2-3mm, making the eyes longer, bigger, and more radiant. This technique is suitable for severe internal ecdysis or associated with deformed adjacent parts, as well as congenital eyes that are small and eager to change. Indication Permanently expand the chapped. Preoperative preparation 1 Check the patient's operation of the eye according to the medical record, pay attention to the left and right eyes, upper and lower jaws, and surgical methods. 2 patients on the supine surgery table. 3 When the surgical eye needs to be surface anesthetized, 0.5% tetracaine (dicaine) can be dripped, 1 drop each time, once every 2-3 minutes, for a total of 3 times. The lacrimal passage exploration technique uses a small cotton swab to lick 0.5% tetracaine and then clips it into the inner corner, and can take a seat without disinfection. 4 According to the type of surgery, the following methods can be used to clean and disinfect: clean the eyelid skin with soapy water, rinse the conjunctival sac with 0.02% benzalkonium bromide (new chlorhexidine) solution or 1:5000 chlorhexidine solution, and then disinfect with 75% ethanol. Area skin, and finally cover the surgical towel or hole towel. Surgical procedure 1. Make a skin extension incision ab to the lower side of the iliac crest. The length of the incision should be determined according to the surgical requirements, usually 1 cm long. The incision end is made into another incision bc to the upper side of the ankle, the length is equal, and the angle between the two incisions is mostly 60°. The larger the angle is, the larger the range of the enlarged splitting is, and the smaller the angle of the slit is, the smaller the range of the splitting is smaller. 2. Skin sneak separation between the two incisions. The external malleolus is cut open, the upper iliac ligament is cut, and ab and bc are sutured, and ac is pushed upwards, thereby expanding the length of the split. 3. Strictly remove the excess skin from the rim of the iliac crest, separate the subconjunctival tissue from the nearby ball, and suture it with the skin's wound edge to make it the posterior layer of the enlarged part of the eyelid.