Illuminative control should stretch his hand can reach, and it is adjustable, can adjust the light and shade of illuminant and angle according to the angle of the need of the eye or body lean.

• 照明的控制应该伸手可及，而且是可调节的，可根据眼睛的需要或身体倚靠的角度来调整光源的明暗和角度。