光适就，眼对光调节通过视网膜的锥形细胞调整亮光中的视觉；光线视觉。

Vision in bright light, mediated by cone cells of the retina; daylight vision.

youdao

这种设备可以替代现有的多叶光栏和其它类别的准直器，使适形放疗更加易于实现。

It is able not only to replace many existing collimators such as MLC, but also to make the conformal radiotherapy easier.

youdao