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The aim of this study was to evaluate the effects of a new instrument “Needle stabilizer” we developed for flanged intraocular lens (IOL) fixation with double-needle technique.
We retrospectively studied the clinical data of 90 eyes of 90 patients (67 men and 23 women) with a mean age of 68.0±13.3 years, who underwent flanged IOL fixation between December 2014 and August 2017 at Yokohama city university medical center, Yokohama, Japan. 40 eyes of 40 patients underwent surgeries with use of the instrument, and 50 eyes of 50 patients without it. One month postoperatively best-corrected visual acuity (BCVA), refractive errors from the preoperative prediction and the IOL tilt (the average of vertical and horizontal tilt measured by using anterior segment optical coherence tomography) were evaluated. We compared two groups with or without use of the instrument.
Postoperative BCVA was not significantly different between two groups (0.023±0.24 vs 0.094±0.32, p=0.36). Refractive errors from the preoperative prediction were not significantly different in eyes with and without the instrument (-0.25±0.96 diopters vs -0.40±1.15 diopters, p=0.82). The mean IOL tilt was significantly smaller in the group with use of the instrument (2.19±1.6 degrees vs 3.58±2.67 degrees, p=0.03). The probability of keeping the IOL tilt below 5 degrees was significantly higher in the group with use of the instrument (odds ratio: 6.9; p=0.001).
The use of a new instrument “Needle stabilizer” suppressed the IOL tilt and improved the fixation state of the IOL after flanged IOL fixation.