Intraocular lens tilt and decentration, anterior chamber depth, and refractive error after trans-scleral suture fixation surgery1
Section snippets
Patients and methods
We examined 52 eyes from 49 consecutive patients who had undergone trans-scleral PC-IOL suture fixation, 51 eyes from 43 consecutive patients who had undergone secondary out-of-the-bag implantation after previous extracapsular cataract surgery, and 50 eyes from 50 patients who had undergone phacoemulsification surgery with in-the-bag implantation. All procedures were performed between March 1994 and November 1997. These eyes were selected because they all had a minimum follow-up of 3 months. Of
Results
The average ± SD patient age was 63.9 ± 14.0 years (range 17 to 87). The patients were 80 men and 73 women; their characteristics are given in Table 1. The mean age in the suture group was significantly younger than that in either the out-of-the-bag or the in-the-bag group. However, no statistically significant differences were found between the three groups regarding gender, the ratio of the left and right eyes, or the interval between the surgery and EAS-1000 examination.
Table 2 summarizes
Discussion
In the trans-scleral suture fixation of PC-IOL, the surgeon generally attempts to fix the haptics in the ciliary sulcus.1, 2, 3, 4, 5, 6, 7, 8, 19 However, ultrasound biomicroscopic studies have shown most haptics not to be located in the sulcus.17, 18 Furthermore, it is also difficult to accurately introduce the haptics into the sulcus, even if needles are penetrated into the sulcus. Therefore, the actual extent of both the IOL tilt and decentration may be greater than has been reported.1, 2, 3
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The authors have no proprietary interest in any of the materials described in this article.