Dick B, Kohnen T, Jacobi F, Jacobi K W
Universitäts-Augenklinik Mainz.
Klin Monbl Augenheilkd. 1997 Aug;211(2):106-12. doi: 10.1055/s-2008-1035105.
A prospective, randomized study was carried out to evaluate functional and biomicroscopic long-term results of different posterior chamber intraocular lenses (IOLs) over a period of two years after clear corneal cataract surgery.
2 years after phacoemulsification through a temporal two-step clear corneal incision a total of 67 patients were examined. In 26 eyes (group A) a foldable plate-haptic silicone IOL (Chiron Adatomed, C10), in 25 eyes (group B) a foldable disc silicone IOL (Chiron Adatomed, 90D) had been implanted through a 3.5 (group A) or 4 mm (group B) corneal incision using a cartridge injector. In 16 eyes (group C) a one-piece PMMA-IOL (Pharmacia & Upjohn, 809C) had been implanted through a 5 mm incision. All eyes underwent functional and biomicroscopic examinations, as well as computerized videokeratographic analysis to obtain corneal topography data.
In group A uncorrected visual acuity valued 0.64 (+/-0.29 SD), in group B 0.59 (+/-0.24) and in group C 0.56 (+/-0.27). Median of uncorrected visual acuity was 0.6 for all groups. Corrected visual acuity was 0.81 (+/-0.29) in group A, 0.8 (+/-0.25) in group B and 0.83 (+/-0.3) in group C. Intraocular pressure (mm Hg) was 13 (+/-2.5) in group A, 14.7 (+/-2) in group B and 15.1 (+/-2.5) in group C. Fibrosis of the anterior capsular rim occurred in 42% of the cases. One eye demonstrated folds in the posterior capsule (group B). Posterior capsular opacification valued 11.9% for all groups. In one eye a Nd:YAG-capsulotomy had already been performed. In group A a decentration of more than 1 mm was objected in one case, in group B in two cases and in group C in one case, but no patient complained about any functional impairment. Two years postoperatively, no signs of a re-flattening in the incision area could be detected using difference mapping tools in the videokeratographic analysis.
Two years after implantation of foldable silicone IOLs and PMMA-IOLs via a temporal clear corneal tunnel incision after phacoemulsification only slight functional and morphologic differences between the three IOL-types could be observed.
进行了一项前瞻性随机研究，以评估在透明角膜白内障手术后两年期间不同后房型人工晶状体（IOL）的功能和生物显微镜下的长期结果。
在经颞侧两步透明角膜切口进行超声乳化白内障吸除术后2年，共检查了67例患者。在26只眼中（A组），通过3.5mm（A组）或4mm（B组）角膜切口，使用注射器将可折叠的板襻硅胶人工晶状体（Chiron Adatomed，C10）植入；在25只眼中（B组），通过4mm角膜切口，使用注射器将可折叠的盘状硅胶人工晶状体（Chiron Adatomed，90D）植入；在16只眼中（C组），通过5mm切口植入一片式PMMA人工晶状体（Pharmacia & Upjohn，809C）。所有眼睛均接受了功能和生物显微镜检查，以及计算机化视频角膜地形图分析以获取角膜地形图数据。
A组未矫正视力为0.64（±0.29标准差），B组为0.59（±0.24），C组为0.56（±0.27）。所有组未矫正视力的中位数均为0.6。A组矫正视力为0.81（±0.29），B组为0.8（±0.25），C组为0.83（±0.3）。A组眼压（mmHg）为13（±2.5），B组为14.7（±2），C组为15.1（±2.5）。前囊边缘纤维化发生在42%的病例中。一只眼出现后囊褶皱（B组）。所有组后囊混浊率为11.9%。有一只眼已进行了Nd:YAG后囊切开术。A组有1例人工晶状体偏心超过1mm，B组有2例，C组有1例，但没有患者抱怨任何功能损害。术后两年，在视频角膜地形图分析中使用差异映射工具未检测到切口区域重新变平的迹象。
在超声乳化白内障吸除术后经颞侧透明角膜隧道切口植入可折叠硅胶人工晶状体和PMMA人工晶状体两年后，三种人工晶状体类型之间仅观察到轻微的功能和形态差异。
