Advances in ophthalmology practice and research · 2025
Comparative analysis of three toric intraocular lenses: clinical outcomes and rotational stability in patients with corneal astigmatism.
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Tang Qiaomei, Yang Wenxin, Zhong Yueyang, Song Xiaohui, Hu Jianghua, Qin Zhenwei, Yu Yinhui, Yu Yibo
Аннотация
PURPOSES: This study aims to evaluate the clinical outcomes and rotational stability of three different toric intraocular lenses (IOLs; Tecnis ZCT, Tecnis ZCU and AcrySof IQ) used in femtosecond laser-assisted cataract surgery (FLACS) and investigate potential variables that may impact the rotational stability.
METHODS: This retrospective study involved 126 eyes from 111 patients who received FLACS with toric IOL implantation. Patients were allocated to three groups: one received the AcrySof IQ toric IOL, another the Tecnis ZCT, and the other the Tecnis ZCU. Ophthalmic parameters such as axial length (AL), anterior chamber depth (ACD), and white-to-white (WTW) distance, were determined preoperatively. Postoperative evaluations were conducted at 3 months.
RESULTS: No significant differences in BCDVA or residual astigmatism (RAS) postoperatively were observed among the groups (P > 0.05). No significant differences were found among the three toric IOLs in mean absolute rotation or directional distribution (P > 0.05). In eyes with axial length ≥ 24.00 mm, the Tecnis ZCT toric IOL demonstrated significantly poorer rotational stability compared to the AcrySof IQ (Tecnis ZCT: 6.41 ± 5.23°, AcrySof IQ: 3.40 ± 2.95°, P = 0.032). Pairwise comparisons showed significant differences in capsule-IOL overlap between the AcrySof IQ and Tecnis ZCT groups (P = 0.014), as well as between the Tecnis ZCT and Tecnis ZCU groups (P < 0.001), but not between the AcrySof IQ and Tecnis ZCU (P = 0.187). There was no significant difference (P > 0.05) in IOL decentration among the three groups. In the Tecnis ZCT group, toric IOL rotation demonstrated a statistically significant association with the WTW distance (Pearson's r = 0.313, P = 0.034). For Tecnis ZCU, a significant correlation was observed between toric IOL rotation and the AL (Pearson's r = 0.325, P = 0.041).
CONCLUSIONS: The three toric IOLs showed comparable visual and refractive outcomes at 3 months. The Tecnis ZCT demonstrated inferior performance in rotational stability and postoperative alignment compared to the AcrySof IQ and Tecnis ZCU.
METHODS: This retrospective study involved 126 eyes from 111 patients who received FLACS with toric IOL implantation. Patients were allocated to three groups: one received the AcrySof IQ toric IOL, another the Tecnis ZCT, and the other the Tecnis ZCU. Ophthalmic parameters such as axial length (AL), anterior chamber depth (ACD), and white-to-white (WTW) distance, were determined preoperatively. Postoperative evaluations were conducted at 3 months.
RESULTS: No significant differences in BCDVA or residual astigmatism (RAS) postoperatively were observed among the groups (P > 0.05). No significant differences were found among the three toric IOLs in mean absolute rotation or directional distribution (P > 0.05). In eyes with axial length ≥ 24.00 mm, the Tecnis ZCT toric IOL demonstrated significantly poorer rotational stability compared to the AcrySof IQ (Tecnis ZCT: 6.41 ± 5.23°, AcrySof IQ: 3.40 ± 2.95°, P = 0.032). Pairwise comparisons showed significant differences in capsule-IOL overlap between the AcrySof IQ and Tecnis ZCT groups (P = 0.014), as well as between the Tecnis ZCT and Tecnis ZCU groups (P < 0.001), but not between the AcrySof IQ and Tecnis ZCU (P = 0.187). There was no significant difference (P > 0.05) in IOL decentration among the three groups. In the Tecnis ZCT group, toric IOL rotation demonstrated a statistically significant association with the WTW distance (Pearson's r = 0.313, P = 0.034). For Tecnis ZCU, a significant correlation was observed between toric IOL rotation and the AL (Pearson's r = 0.325, P = 0.041).
CONCLUSIONS: The three toric IOLs showed comparable visual and refractive outcomes at 3 months. The Tecnis ZCT demonstrated inferior performance in rotational stability and postoperative alignment compared to the AcrySof IQ and Tecnis ZCU.