Inoue T, Maeda N, Inoue Y, Shimomura Y, Tano Y
Department of Ophthalmology, Osaka University Medical School, Suita, Osaka, Japan.
J Cataract Refract Surg. 2000 Nov;26(11):1680-3. doi: 10.1016/s0886-3350(00)00718-5.
A 41-year-old man with 16 radial keratotomy (RK) incisions in each eye reported a paradoxical diurnal variation in vision in both eyes with low Dk/L soft contact lenses. After rk, the patient experienced the conventional diurnal change a morning-to-evening mean (right and left eyes) myopic change of -1.80 diopters (D). However, while wearing low Dk/L contact lenses, a paradoxical morning-to-evening mean hyperopic change of 2.30 D was found. The diurnal variation was minimized (0.50 D) by wearing high Dk/L contact lenses. These results suggest that contact lenses can be used to treat diurnal variation in manifest refraction after RK by inducing appropriate stress.
一名41岁男性，每只眼睛有16条放射状角膜切开术（RK）切口，佩戴低透氧系数/含水量（Dk/L）软性隐形眼镜时，双眼视力出现反常的昼夜变化。RK术后，患者经历了传统的昼夜变化，即早晚平均（右眼和左眼）近视变化-1.80屈光度（D）。然而，佩戴低Dk/L隐形眼镜时，发现早晚平均有2.30 D的反常远视变化。佩戴高Dk/L隐形眼镜可使昼夜变化最小化（0.50 D）。这些结果表明，隐形眼镜可通过诱导适当的应力来治疗RK术后明显屈光不正的昼夜变化。
