Micro-Conjunctival Autografting Combined With Amniotic Membrane Transplantation Treating Recurrent Pterygium Trial

1. Disinfection, anaesthesia and excision of recurrent pterygium are the same as conventional autologous conjunctival transplantation. 2. The biological freeze-dried amniotic membrane (Jiangxi Ruiji Biological engineering technology Co., Ltd., Nanchang, China), equivalent in size to the exposed scleral surface, was flat mounted on the exposed scleral area , and the amniotic membrane was fixed on the superficial sclera with 10-0 suture. 3. After amniotic membrane graft was fixed, 2% lidocaine was applied to the superior temporal conjunctiva. 4. Take the conjunctival epithelial graft with the length equivalent to the neck of recurrent pterygium and the width of 1.5mm \~ 2.0mm, and translate it on amniotic membrane surface near corneal limbus. The conjunctival flap was secured with 10-0 suture. 5. Last, tobramycin and dexamethasone eye ointment was applied and bandaged with dressing.

1. Routine disinfection and anaesthesia. 2. To bluntly separate and excise pterygium. 3. Remove pterygium tissue on the corneal surface with a round blade. 4. Place a cotton ball slightly infiltrated with diluent Bleomycin A5 Hydrochloride for Injection on the exposed sclera for 1 minute and flushed away later. 5. After anesthesia, take the superior temporal conjunctival epithelium equal to the size of the exposed scleral and translate it to the exposed scleral surface (the limbus side of the graft corresponds to the limbus of the graft bed), and fixed with 10-0 suture. 6. The free conjunctival margin of the conjunctival flap sampling area was sutured intermittently with 10-0 suture. 7. Apply tobramycin dexamethasone eye ointment and wrap the eyes with dressing after operation.