J Refract Surg. 2020 Dec 1;36(12):804-810. doi: 10.3928/1081597X-20200930-01.
To measure the in vivo longitudinal chromatic aberration (LCA) from the chromatic difference of focus (480 to 700 nm) using psychophysical methods in patients bilaterally implanted with a hydrophobic trifocal intraocular lens (IOL).
Psychophysical best focus was measured in both eyes at different wavelengths (480 to 700 nm) and at three different viewing distances (0.00, +1.75, and +3.50 diopters [D]) using a custom-developed polychromatic adaptive optics set-up provided with a supercontinuum laser, a Hartmann-Shack wavefront sensor, a deformable mirror, a motorized Badal system, a pupil monitoring system, and a psychophysical channel with monochromatically illuminated stimuli. Measurements were performed on 10 patients (20 eyes) bilaterally implanted with hydrophobic trifocal diffractive IOLs (FineVisionHP POD F GF; PhysIOL). LCA was computed from the chromatic difference of focus curves as the difference between 480 and 700 nm at near, intermediate, and far.
The LCA from psychophysical measurements was significantly higher for far vision (0.99 ± 0.06 diopters [D]), than for intermediate (0.67 ± 0.10 D) and near (0.23 ± 0.08 D) vision (one-way analysis of variance, P < .05).
LCA for far vision was significantly higher than for intermediate and near vision in hydrophobic trifocal diffractive IOLs, in agreement with a previous study with the same optical design but hydrophilic material IOLs. The LCA for the hydro-phobic IOL is slightly higher than for the hydrophilic IOL at far. Different combinations of refractive and diffractive LCA will allow optimizing IOL designs to improve polychromatic image quality. [J Refract Surg. 2020;36(12):804-810.].
使用心理物理学方法测量双侧植入疏水性 trifocal 人工晶状体（IOL）患者的体内纵向色差（LCA），通过聚焦色差（480 至 700nm）来测量。
使用定制的多色自适应光学装置，该装置配备了超连续激光、哈特曼-夏克波前传感器、变形镜、电动巴达尔系统、瞳孔监测系统和具有单色照明刺激的心理物理学通道，在不同的波长（480 至 700nm）和三个不同的观察距离（0.00、+1.75 和+3.50 屈光度[D]）下，测量双眼的心理物理学最佳焦点。该研究共纳入了 10 名患者（20 只眼），这些患者均双侧植入疏水性 trifocal 衍射 IOL（FineVisionHP POD F GF；PhysIOL）。通过近、中、远焦点色差曲线计算 LCA，即 480nm 和 700nm 之间的差异。
心理物理学测量的 LCA 远视力明显更高（0.99±0.06 屈光度[D]），中视力（0.67±0.10 D）和近视力（0.23±0.08 D）较低（单因素方差分析，P<.05）。
疏水性 trifocal 衍射 IOL 的远视力 LCA 明显高于中、近视力，与先前用相同光学设计但亲水性材料 IOL 的研究结果一致。疏水性 IOL 的 LCA 比亲水性 IOL 略高。不同的折射和衍射 LCA 组合将允许优化 IOL 设计以改善多色图像质量。[J Refract Surg. 2020;36(12):804-810.]。
