Pavlin C J, Buys Y M, Pathmanathan T
Department of Ophthalmology, Ontario Cancer Institute-Princess Margaret Hospital, Toronto.
Arch Ophthalmol. 1998 Jul;116(7):854-7. doi: 10.1001/archopht.116.7.854.
To evaluate the use of ultrasound biomicroscopy (UBM) in detecting ciliary zonular defects and to describe the UBM signs of such defects.
Eighteen eyes of 18 patients with clinically suspected zonular abnormalities were evaluated using UBM. Predisposing factors included pseudoexfoliation, congenital spherophakia, surgical procedure, trauma, and the Marfan syndrome.
Of 18 eyes, 11 showed UBM evidence of missing zonules and 11 showed evidence of zonular stretch. Four of the 18 eyes had both missing and stretched zonular fibers. All of the eyes examined showed increased lenticular sphericity in the area of zonular disorder. Nine eyes showed ciliary body flattening. Pupillary block was seen in 5 patients, and angle crowding due to direct iridal rotation was noted in 3.
Ultrasound biomicroscopy can detect zonular loss and stretching directly. Increased lenticular sphericity and ciliary body flattening are signs of zonular defects. Angle closure mechanisms include pupillary block and direct iridal rotation.
评估超声生物显微镜（UBM）在检测睫状小带缺损中的应用，并描述此类缺损的UBM表现。
对18例临床怀疑有小带异常的患者的18只眼进行UBM评估。诱发因素包括假性剥脱、先天性球形晶状体、手术操作、外伤和马方综合征。
18只眼中，11只显示有睫状小带缺失的UBM证据，11只显示有睫状小带拉伸的证据。18只眼中有4只同时存在睫状小带纤维缺失和拉伸。所有检查的眼睛在睫状小带紊乱区域均显示晶状体球形度增加。9只眼显示睫状体扁平。5例患者出现瞳孔阻滞，3例观察到因虹膜直接旋转导致的房角拥挤。
超声生物显微镜可直接检测睫状小带的缺失和拉伸。晶状体球形度增加和睫状体扁平是睫状小带缺损的表现。房角关闭机制包括瞳孔阻滞和虹膜直接旋转。
