Hayashi K, Hayashi H, Nakao F, Hayashi F
Hayashi Eye Hospital, 4-7-13 Hakataekimae, Hakata-Ku, Fukuoka 812, Japan.
Br J Ophthalmol. 2001 Nov;85(11):1294-7. doi: 10.1136/bjo.85.11.1294.
To prospectively investigate changes in the area of the anterior capsule opening, and intraocular lens (IOL) decentration and tilt after implantation of a hydrogel IOL.
100 patients underwent implantation of a hydrogel IOL in one eye and an acrylic IOL implantation in the opposite eye. The area of the anterior capsule opening, and the degree of IOL decentration and tilt were measured using the Scheimpflug videophotography system at 3 days, and at 1, 3, and 6 months postoperatively.
The mean anterior capsule opening area decreased significantly in both groups. At 6 months postoperatively, the area in the hydrogel group was significantly smaller than that in the acrylic group. The mean percentage of the area reduction in the hydrogel group was also significantly greater than that in the acrylic group, being 16.9% in the hydrogel group and 8.8% in the acrylic group. In contrast, IOL decentration and tilt did not progress in either group. No significant differences were found in the degree of IOL decentration and tilt throughout the follow up period.
Contraction of the anterior capsule opening was more extensive with the hydrogel IOL than with the acrylic IOL, but the degree of IOL decentration and tilt were similar for the two types of lenses studied.
前瞻性研究水凝胶人工晶状体植入术后前囊开口面积、人工晶状体（IOL）偏心和倾斜的变化。
100例患者一只眼植入水凝胶人工晶状体，另一只眼植入丙烯酸酯人工晶状体。使用Scheimpflug摄像系统在术后3天、1个月、3个月和6个月测量前囊开口面积、IOL偏心度和倾斜度。
两组的平均前囊开口面积均显著减小。术后6个月，水凝胶组的面积显著小于丙烯酸酯组。水凝胶组面积减少的平均百分比也显著高于丙烯酸酯组，水凝胶组为16.9%，丙烯酸酯组为8.8%。相比之下，两组的IOL偏心和倾斜均未进展。在整个随访期间，IOL偏心和倾斜程度未发现显著差异。
与丙烯酸酯人工晶状体相比，水凝胶人工晶状体使前囊开口的收缩更广泛，但所研究的两种类型晶状体的IOL偏心和倾斜程度相似。
