Giant retinal tear( GRT) refers to a retinal break extending circumferential for ≥3 clock hours( ≥90°) of the retinal with trailing edge folding.With the development of technology,success rate of surgical for GRT was increased. Chandelier illumination can help surgeons complete the operation by themselves,and 23 G,25G,27 G microsurgical techniques make it easy for the application of surgical instruments and amplify the scope of operation. Meanwhile,endoscope can reduce the impact of refractive media opacity...