Noor Research Center for Ophthalmic Epidemiology, Noor Eye Hospital, Tehran, Iran.
Department of Medical Surgical Nursing, School of Nursing and Midwifery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Rom J Ophthalmol. 2020 Jul-Sep;64(3):280-284.
To determine the effect of different types of Rigid Gas Permeable (RGP) contact lenses on ocular aberrations in patients with keratoconus. Eighteen eyes of young patients with mild to moderate keratoconus were selected. General ocular examinations such as refraction, visual acuity, and ocular aberrations were performed. Three types of RGP contact lenses, i.e., Boston, Senso Select and Wohlk, were fitted using the cross over method. Repeated measures analysis of variance and Mauchly's test of sphericity were used to compare the average of residual high order aberrations and visual acuity after fitting each type of lens. Vertical coma was -0.271 ± 0.37 µm before fitting and decreased to 0.081 ± 0.08 µm with Boston, 0.098 ± 0.08 µm with Senso Select and 0.124 ± 0.08 µm with Wohlk contact lens (P-value < 0.0001). The mean RMS (root mean square) for high order aberrations decreased from 0.526 ± 0.43 µm before fitting to 0.256 ± 0.09 µm with Boston, 0.263 ± 0.12 µm with Senso Select, and 0.304 ± 0.10 µm with Wohlk contact lens (P-value= 0.001). The mean RMS for low order aberrations decreased from 1.480 ± 0.78 µm before fitting to 0.703 ± 0.43 µm with Boston, 0.802 ± 0.39 µm with Senso Select, and 0.760 ± 0.45µm with Wohlk (P-value < 0.0001). Despite achieving optimal fit and good visual acuity with these different RGP lenses, in keratoconus patients, their performance is different in reducing ocular aberrations.
为了确定不同类型的硬性透气性角膜接触镜（RGP）对圆锥角膜患者眼像差的影响。选择了 18 名轻中度圆锥角膜的年轻患者。进行了一般眼科检查，如屈光度、视力和眼像差。使用交叉法适配三种类型的 RGP 隐形眼镜，即波士顿、Senso Select 和 Wohlk。使用重复测量方差分析和 Mauchly 球形检验来比较每种镜片适配后的残余高阶像差和视力的平均值。垂直彗差在适配前为-0.271±0.37μm，用波士顿降低至 0.081±0.08μm，用 Senso Select 降低至 0.098±0.08μm，用 Wohlk 降低至 0.124±0.08μm（P 值<0.0001）。高阶像差的 RMS（均方根）平均值从适配前的 0.526±0.43μm 降至 0.256±0.09μm （用波士顿）、0.263±0.12μm（用 Senso Select）和 0.304±0.10μm（用 Wohlk）（P 值=0.001）。低阶像差的 RMS 平均值从适配前的 1.480±0.78μm 降至 0.703±0.43μm（用波士顿）、0.802±0.39μm（用 Senso Select）和 0.760±0.45μm（用 Wohlk）（P 值<0.0001）。尽管这些不同的 RGP 镜片能够达到最佳适配和良好的视力，但在圆锥角膜患者中，它们在降低眼像差方面的表现有所不同。
