Gloor B R
Augenklinik, Universitätsspital Zürich.
Ophthalmologe. 1998 Feb;95(2):100-3. doi: 10.1007/s003470050244.
In 1995, Beck and Lynch reported a method to perform a 360 degrees trabeculotomy by prolene suture introduced into Schlemm's canal. Because this type of surgery has proved to have perils and can lead to extreme hypotony, even a small series of cases must be reported.
Suture trabeculotomy was planned in five eyes of four patients, 5 and 7 months old and 6 and 51 years old, with primary congenital glaucoma, but completed in only two eyes.
In one child, suture trabeculotomy could be accomplished easily in both eyes. In the first eye a 360 degrees-tomy was performed, in the second eye only a 180 degrees-tomy was done. Both eyes remained extremely hypotonic (4 mm Hg). In one eye Schlemm's canal could not be disrupted by the suture; in another eye, Schlemm's canal could be probed only for a short distance, and in one eye the suture went the wrong way.
Because a suture trabeculotomy can be transformed into a normal trabeculotomy any time, the main problems of the 360 degrees-suture trabeculotomy are not the possible technical difficulties, but that a successful suture trabeculotomy is followed by extreme hypotony.
1995年,贝克和林奇报告了一种通过将聚丙烯缝线引入施莱姆管来进行360度小梁切开术的方法。由于这种手术已被证明存在风险并可能导致极低眼压,即使是少量病例也必须报告。
计划对4例患者的5只眼睛进行缝线小梁切开术,患者年龄分别为5个月、7个月、6岁和51岁,均患有原发性先天性青光眼,但仅2只眼睛完成了手术。
在一名儿童中,双眼均能轻松完成缝线小梁切开术。第一只眼睛进行了360度切开,第二只眼睛仅进行了180度切开。双眼眼压仍极低(4毫米汞柱)。一只眼睛的缝线未能穿通施莱姆管;另一只眼睛,施莱姆管仅能被探查一小段距离,还有一只眼睛缝线方向错误。
由于缝线小梁切开术可随时转变为常规小梁切开术,360度缝线小梁切开术的主要问题并非可能存在的技术困难,而是成功的缝线小梁切开术后会出现极低眼压。