Ultrasound biomicroscopy in the diagnosis of chestnut thorn in sclera

Objective To investigate the application of ultrasound biomicroscopy (UBM) in the diagnosis of sclera chestnuts thorns. Methods Retrospective study of 65 eyes of 65 cases which were diagnosed as scleral chestnuts thorns. Before operation, clinical examination was performed, including slit lamp microscopy and anterior segment photograph. Chestnuts thorns were localized using UBM were confirmed by surgical operation. Results Scleral chestnuts thorns of all cases were extracted successfully after being localized by UBM. Five eyes have local sclera erosion and thinning. Among which 1 eye get autologous sclera transplantation for its sclera was too thin.One eye was suffering from bacterial endophthalmitis after operation. His eye ball was saved after vitrectomy and lensectomy combined with postoperative antibiotic therapy. Conclusion UBM is highly significant and has great practical value for diagnosing chestnuts thorns in sclera. And UBM can find chestnuts thorns in time, alleviate introcular infection, decrease misdiagnosis and missed diagnosis. It makes up for the dificiency of routine clinical examination and imaging examination. Key words: Ultrasound biomicroscopy; Chestnuts thorns, sclera