full lamellar keratoplasty

1. Suitable for all kinds of lamellar keratoplasty, but the extent of the lesion is too large, and only some of the lamellar grafts can not be removed, or will affect the visual acuity. 2. Unscarred keratoconus with a cone bottom diameter greater than 8 mm. Treatment of diseases: keratitis bacterial corneal ulcer Indication 1. Suitable for all kinds of lamellar keratoplasty, but the extent of the lesion is too large, and only some of the lamellar grafts can not be removed, or will affect the visual acuity. 2. Unscarred keratoconus with a cone bottom diameter greater than 8 mm. 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. Cut the conjunctiva along the limbus along the limbus, expose the sclera, burn and stop bleeding, and use a blade to scratch along the sclera, 0.3mm deep. If the lesion involves the sclera, it should be removed accordingly. 2. Using a blade to remove the diseased cornea along the same layer, the method is the same as optical lamellar keratoplasty. The same method was used to obtain the donor lamellar cornea, which was the same size. The 10-0 nylon thread was sutured intermittently to restore the conjunctiva to the limbus.