From the Sugita Eye Clinic, Tokyo, Japan (Sugita, Yoshida); Sugita Eye Clinic Annex, Tokyo, Japan (Aomatsu, Kaneko); Department of Ophthalmology, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan (Hasegawa, Oshika).
J Cataract Refract Surg. 2023 Apr 1;49(4):400-404. doi: 10.1097/j.jcrs.0000000000001111.
To assess the influence of capsular tension ring (CTR) on surgical outcomes of trifocal intraocular lens (IOL) implantation in femtosecond laser-assisted cataract surgery.
Sugita Eye Clinic, Tokyo, and University of Tsukuba, Ibaraki, Japan.
Prospective, randomized, paired-eye clinical study and laboratory study.
In the clinical study involving 44 eyes of 22 patients with no risk of zonular instability, 1 eye received IOL alone and the contralateral eye received IOL with CTR. Preoperative capsular bag diameter and postoperative IOL tilt/decentration were measured using anterior segment optical coherence tomography. In the laboratory study, IOL and CTR were implanted into an artificial capsular bag of 10 mm in diameter, and IOL centration was evaluated.
Throughout the 12-month follow-up period, there was no significant difference in refractive and visual outcomes between groups. The amount of IOL decentration was significantly larger in eyes with CTR than in eyes without CTR at 12 months postoperatively (P = .037). There was a significant negative correlation between capsular bag diameter and the amount of IOL decentration in eyes with CTR (P = .038), but not in eyes without CTR (P = .873). The laboratory study indicated that interference between CTR eyelets and IOL haptics significantly increased IOL decentration (P < .001).
The use of CTR did not affect refractive and visual outcomes of trifocal IOL implantation in eyes without the risk of zonular weakness. CTR coimplantation increased IOL decentration possibly due to the interference between CTR eyelets and IOL haptics.
评估在飞秒激光辅助白内障手术中，囊袋张力环（CTR）对三焦点人工晶状体（IOL）植入手术结果的影响。
日本东京杉田眼科诊所和茨城筑波大学。
前瞻性、随机、配对眼临床研究和实验室研究。
在涉及 22 名无晶状体囊袋不稳定风险患者的 44 只眼中的临床研究中，1 只眼接受单独 IOL 植入，对侧眼接受 IOL 联合 CTR 植入。使用眼前节光学相干断层扫描测量术前囊袋直径和术后 IOL 倾斜/偏心。在实验室研究中，将 IOL 和 CTR 植入直径为 10mm 的人工囊袋中，并评估 IOL 中心定位。
在 12 个月的随访期间，两组的屈光和视觉结果无显著差异。术后 12 个月时，带 CTR 的眼中 IOL 偏心量明显大于不带 CTR 的眼中（P =.037）。带 CTR 的眼中，囊袋直径与 IOL 偏心量呈显著负相关（P =.038），而不带 CTR 的眼中无此相关性（P =.873）。实验室研究表明，CTR 眼环与 IOL 襻之间的干扰显著增加了 IOL 偏心量（P <.001）。
在无晶状体囊袋薄弱风险的眼中，使用 CTR 不会影响三焦点 IOL 植入的屈光和视觉结果。带 CTR 植入增加了 IOL 偏心量，可能是由于 CTR 眼环与 IOL 襻之间的干扰所致。
