Zehetmayer M, Skorpik C, Weghaupt H, Pfleger T, Scholz U
I. Universitäts-Augenklinik Wien.
Klin Monbl Augenheilkd. 1994 Apr;204(4):220-5. doi: 10.1055/s-2008-1035521.
An important step in developing cataract surgery was the introduction of soft foldable silicone intraocular lenses in the middle 80's. Functional and morphological long-term data are a vital base for definite conclusions on the new material's safety and biocompatibility.
Our study presents the long-term results after the implantation of a silicone posterior chamber lens with solid plate haptic design (STAAR AA-4203). All lenses were folded and implanted through a 4-mm small corneoscleral incision. Our study includes 54 eyes in 52 patients with a mean follow-up period of 56.5 +/- 8.9 months.
A visual acuity of 20/40 or better was found in 90.7% of all eyes. All except one of the 33 eyes without any further preexisting ocular pathology at the time of the operation achieved a visual acuity of 20/40 or better. Two thirds of all eyes had a horizontal astigmatism of +1.0 D or less. By slitlamp examination more or less dispersed pigment was seen on the IOL's surface in 46.3%. 83% of the silicone lenses were centrated within 0.5 mm. A YAG-laser capsulotomy was performed in 7 cases (13%). IOL-related intraocular inflammations, cystoid macular edema or an elevated intraocular pressure did not occur in this group.
Our satisfactory long-term results suggest an excellent biocompatibility of the IOL's design and material.
白内障手术发展中的一个重要步骤是在80年代中期引入了软性可折叠硅胶人工晶状体。功能和形态学的长期数据是对这种新材料的安全性和生物相容性得出明确结论的重要基础。
我们的研究展示了植入具有实心板状襻设计的硅胶后房型人工晶状体（STAAR AA - 4203）后的长期结果。所有人工晶状体均经折叠并通过4毫米的小角巩膜切口植入。我们的研究纳入了52例患者的54只眼，平均随访期为56.5±8.9个月。
所有眼中90.7%的视力达到20/40或更好。手术时无任何其他眼部病变的33只眼中，除1只眼外，其余均达到20/40或更好的视力。所有眼中三分之二的水平散光为+1.0 D或更低。通过裂隙灯检查，46.3%的人工晶状体表面可见或多或少的色素沉着。83%的硅胶人工晶状体居中在0.5毫米范围内。7例（13%）患者进行了YAG激光后囊切开术。该组未发生与人工晶状体相关的眼内炎症、黄斑囊样水肿或眼压升高。
我们令人满意的长期结果表明该人工晶状体的设计和材料具有优异的生物相容性。
