Assessment of zonules after blunt trauma using ultrasound biomicroscopy / 中华超声影像学杂志

ABSTRACT

Objective To evaluate the role of ultrasound biomicroscopy(UBM) as a method for assessing the zonules after eye blunt trauma,in order to help the selection of the surgical technique and improve the outcomes of traumatic cataract surgery.Methods Two hundred and seven eyes with eye blunt trauma were examed using UBM with a 50 MHz transducer.The degree and extent of the zonular defects were recorded.All patients also had the slit-lamp examination before the UBM.Results Examined using UBM,zonular defects were identified in 67 of 207 eyes(32.4%).Zonular abnormalities include broken zonules and stretched zonules.Forty-six eyes(68.7%) had broken zonules,15 eyes(22.4%) had stretched zonules,6 eyes(9.0%) had both broken and stretched zonules.The extent of broken zonules ranged from under one quadrant to 360?.Increased lenticular sphericity and ciliary body flattening were seen in the area of zonular defects on UBM.Examined using slit-lamp,35 of 207 eyes(16.9%) had phacodonesis and iridodonesis.Conclusions UBM is an effective method for identifying zonular defects in patients with anterior segment trauma.Diagnosing zonular defects preoperatively is of helpful in surgical planning and reduce complications.