Wechsler S
J Am Optom Assoc. 1979 Mar;50(3):327-8.
Rigid lenses may flex on the eye, particularly when the center thickness is less than 0.12 mm. Rigid oxygen permeable materials are less rigid than PMMA and can be expected to flex more easily.
硬性镜片可能会在眼睛上发生弯曲,尤其是当镜片中心厚度小于0.12毫米时。硬性透氧材料的刚性比聚甲基丙烯酸甲酯(PMMA)低,预计更容易弯曲。