The application of three-dimensional MRI for posterior sclera reinforcement of patients with high myopia

Abstract

Objective To observe the application and function of three-dimensional magnetic resonance imaging (3-D MRI) for posterior sclera reinforcement (PSR) of patients with high myopia. Methods Twenty eyes of 19 cases with high myopia underwent PSR. All cases took 3-D MRI before and after surgery. Before surgery, the arc length from upper corneal limbus through the peak of the scleral staphyloma to under corneal limbus, horizontal and vertical arc length of the staphyloma, and arc length from temporal border of the staphyloma to optical nerve were measured. In postoperative PSR, the image of strip was reconstructed. Results The three dimensional measured value related to the staphyloma was obtained by 3-D MRI. PSR strip showed clear. Among all cases, the strips just reinforcement in the staphyloma were 14 eyes. Six eyes occurred deviation from the staphyloma, including 5 eyes deviated to temporal side of the staphyloma and 1 eye closed to the optic nerve. After the second times of the PSR, the position of the strip was moderate. Conclusion The application of 3-D MRI contributes to preoperative assessment and postoperative evaluation, it has the certain value in clinical application. Key words: Myopia, high; Staphyloma, scleral, posterior; Posterior sclera reinforcement; MRI, three-dimensional