From the Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
From the Department of Ophthalmology, Affiliated Hospital of Qingdao University, Qingdao, Shandong, China.
J Cataract Refract Surg. 2018 Aug;44(8):949-954. doi: 10.1016/j.jcrs.2018.05.026. Epub 2018 Jul 19.
To evaluate the visual quality of patients with different angle κ sizes after a trifocal diffractive intraocular lens (IOL) implantation.
The Affiliated Hospital of Qingdao University, Qingdao, China.
Prospective case series.
Patients who had phacoemulsification with the implantation of the trifocal IOL AT LISA tri 839MP were enrolled in the study. The patients were divided into 3 groups based on the size of the preoperative angle κ. Monocular far, intermediate, and near uncorrected visual acuities were measured during a 3-month follow-up. Other outcome measurements taken were the modulation transfer function (MTF) cutoff, the Strehl ratio, and objective scatter index. All the patients completed a subjective questionnaire survey.
The study comprised 89 patients (89 eyes). The 3 groups showed statistically significant differences in the incidence of glare and halo after their surgery. There were no significant differences in the following variables: uncorrected far, intermediate, and near visual acuities, MTF cutoff, Strehl ratio, and spectacle independence. There was a significant difference in the MTF cutoff and Strehl ratio between the patients with the largest and the smallest angle κ.
The patients' postoperative far, intermediate, and near vision was not affected by their angle κ. However, when angle κ was greater than 0.4 mm, the incidence of glare and halo increased and when it was greater than 0.5 mm, patients' visual quality decreased. In clinical work, for patients with a larger angle κ, the choice to implant a trifocal IOL should be carefully evaluated.
评估不同角 κ 大小的患者在植入三焦点衍射型人工晶状体（IOL）后的视觉质量。
中国青岛大学附属医院。
前瞻性病例系列。
本研究纳入了接受白内障超声乳化联合三焦点 IOL AT LISA tri 839MP 植入术的患者。根据术前角 κ 的大小，将患者分为 3 组。在 3 个月的随访期间，测量单眼远、中、近距未矫正视力。其他测量的结果包括调制传递函数（MTF）截止值、斯特列尔比和客观散射指数。所有患者均完成了主观问卷调查。
本研究共纳入 89 例（89 只眼）患者。术后 3 组患者的眩光和光晕发生率存在统计学差异。未矫正远、中、近视力、MTF 截止值、斯特列尔比和不依赖眼镜的比例等变量无显著差异。角 κ 最大和最小的两组患者之间的 MTF 截止值和斯特列尔比存在显著差异。
患者术后的远、中、近视力不受角 κ 的影响。然而，当角 κ 大于 0.4mm 时，眩光和光晕的发生率增加，当角 κ 大于 0.5mm 时，患者的视觉质量下降。在临床工作中，对于角 κ 较大的患者，应仔细评估植入三焦点 IOL 的选择。
