Early Postoperative Rotational stability and its related factors of a single-piece acrylic toric intraocular lens

Abstract

Purpose In the present study, we aimed to evaluate the early postoperative rotational stability of TECNIS toric intraocular lens (IOL) and analyse its correlation with preoperative and intraoperative parameters. Methods A total of 102 eyes from 87 cataract patients who underwent implantation of TECNIS toric IOL during July 2016 to November 2017 were enrolled in this retrospective study. Preoperative parameters including corneal astigmatism, axial length (AL), lens thickness (LT), anterior chamber depth (ACD) and sulcus-to-sulcus (STS), were determined. The area of capsulorhexis was measured with Rhinoceros 5.0 software. The follow-up examinations including the residual astigmatism (RAS) and postoperative toric IOL axis, were performed at 1 month and 3 months after surgery. Results RAS was −0.84 ± 0.88 D at 1 month and −0.81 ± 0.89 D at 3 months after surgery. The rotation of toric IOL at 3 months was 4.83 ± 3.65°. The Pearson's r of ACD, horizontal and vertical STS, and toric IOL target axis was 0.011, 0.039, 0.045 and 0.082. The toric IOL rotation was positively correlated with the area of capsulorhexis (r = 0.522, P = 0.0003), LT (r = 0.288, P = 0.003) and AL (r = 0.259, P = 0.009). As for the area of capsulorhexis, the regressive equation was: y = 0.682 × −13.105, demonstrating that the diameter of capsulorhexis should be controlled within 5.8 mm to maintain the toric IOL rotation within 5.0°. Conclusions TECNIS toric IOLs possessed great early postoperative rotational stability. The area of capsulorhexis, AL and LT were positively correlated with postoperative rotational stability. A capsulorhexis within 5.8 mm had an important significance in improving rotational stability.

Comparison of Long-Term Rotational Stability of Three Commonly Implanted Intraocular Lenses

“…Studies found a maximum rotation from 1.8 to 95 810-17 in the Acrysof and 8 to 45.32 8 in the Tecnis IOL. 16,[18][19][20][21][22] In our study, 1 Acrysof IOL rotated 17.6 8 after 1 hour and 27.2 8 from 1 hour to 1 week in the same direction. In total, this IOL showed 44.8 degrees of rotation during the first week.…”

Early-stage clinical outcomes and rotational stability of TECNIS toric intraocular lens implantation in cataract cases with long axial length

“…However, some scholars did not find the correlation between the IOL rotation and AL in myopic eyes [8]. Our previous research has discovered the correlation between toric IOL rotation and LT, AL and area of capsulorhexis in eyes of various axial lengths and a positive correlation between AL and toric IOL rotation [9]. The controversy about the possible correlation between the AL and IOL rotation remains furious.…”

Comparison of Wash-out Properties after Use of the Vital Dye Trypan Blue in the Form of an Ophthalmic Dye and Bound in a Sodium Hyaluronate by Raman Spectroscopy

“…It may act as a sliding film between IOL rear surface and posterior capsule), especially for IOLs with large diameter and/or plate-haptic design. 21 Furthermore, it has been discussed in the past in various studies whether remaining OVD behind the IOL could act as channels for lens epithelial cell growth (LEC) and thus for faster posterior capsule opacification (PCO) development. 22 In addition, further advantages, such as an intraoperative increase in contrast (when using a suitable microscopy light source) and improved control of the amount of OVD injected, could be observed when using Pe-Ha-Blue®PLUS.…”