Braunstein R E, Cotliar A M, Wirostko B M, Gorman B D
Edward S. Harkness Eye Institute, Columbia-Presbyterian Medical Center, New York, New York 10032, USA.
J Cataract Refract Surg. 1996 Nov;22(9):1247-50. doi: 10.1016/s0886-3350(96)80078-2.
Intraocular metallic-appearing foreign bodies in the anterior segment were seen in six eyes after cataract extraction by two-handed phacoemulsification. These fragments produced no symptoms and had no clinically significant effect on visual function. Similar-appearing foreign bodies were experimentally produced by applying ultrasound power with a phacoemulsification handpiece to the surface of a cyclodialysis spatula in vitro. Microscopic examination of the phaco handpiece tip and cyclodialysis spatulas revealed numerous surface irregularities, suggesting a possible source of these fragments. These results suggest that instrument touch during phacoemulsification may be the cause of the fragments. Long-term follow-up of these patients is required to determine the overall effect of the fragments.
在双手超声乳化白内障摘除术后，6只眼中发现眼前节有金属样外观的眼内异物。这些碎片未产生症状，对视觉功能也无临床显著影响。通过在体外将超声乳化手柄的超声能量施加于睫状体分离刮刀表面，实验性地产生了类似外观的异物。对超声乳化手柄尖端和睫状体分离刮刀的显微镜检查发现有许多表面不规则之处，提示这些碎片可能的来源。这些结果表明，超声乳化过程中的器械接触可能是碎片产生的原因。需要对这些患者进行长期随访，以确定碎片的总体影响。
