Kuroda Teruhito, Fujikado Takashi, Maeda Naoyuki, Oshika Tetsuro, Hirohara Yoko, Mihashi Toshifumi
Department of Applied Medical Engineering, Osaka University Medical School, Osaka, Japan.
J Cataract Refract Surg. 2002 Mar;28(3):438-44. doi: 10.1016/s0886-3350(01)01176-2.
To determine local refractive changes and higher-order aberrations in patients with nuclear or cortical cataract.
Osaka University Medical School, Osaka, Japan.
Wavefront analysis of both ocular and corneal aberrations was performed with the Hartmann-Shack aberrometer in 2 patients, a 22-year-old woman with bilateral developmental nuclear cataract and a 68-year-old woman with mild bilateral cortical cataract.
Case 1 showed a delay in the wavefront that caused a myopic shift in the central pupillary area in both eyes, associated with the nuclear cataract. The spherical-like aberration (right eye, 36%; left eye, 21%) was greater than the coma-like aberration in both eyes. Case 2 showed an advancement of the wavefront that caused a hyperopic shift, especially in the lower temporal pupillary area, that was associated with the cortical cataract. The coma-like aberration (right eye, 63%; left eye, 52%) was greater than the spherical-like aberration in both eyes. The polarity of the third-order spherical aberration was negative in Case 1 and positive in Case 2. Corneal higher-order aberrations were small and had a different distribution than ocular higher-order aberrations in both patients.
The Hartmann-Shack aberrometer was useful in detecting local refractive changes and higher-order aberrations in patients with mild cataract. The polarity and the absolute value of ocular higher-order aberrations may be useful parameters to characterize eyes with cataract.
确定核性或皮质性白内障患者的局部屈光变化和高阶像差。
日本大阪大阪大学医学院。
使用哈特曼-夏克像差仪对2例患者进行眼像差和角膜像差的波前分析，1例为22岁双侧发育性核性白内障女性患者，另1例为68岁双侧轻度皮质性白内障女性患者。
病例1显示波前延迟，导致双眼中央瞳孔区出现近视性移位，与核性白内障有关。双眼的类球面像差（右眼36%；左眼21%）大于类彗差。病例2显示波前提前，导致远视性移位，尤其是在颞下瞳孔区，与皮质性白内障有关。双眼的类彗差（右眼63%；左眼52%）大于类球面像差。病例1中三阶球面像差的极性为负，病例2中为正。两名患者的角膜高阶像差均较小，且分布与眼高阶像差不同。
哈特曼-夏克像差仪有助于检测轻度白内障患者的局部屈光变化和高阶像差。眼高阶像差的极性和绝对值可能是表征白内障眼的有用参数。
