To provide a perfusion suction device which improves stability of intraocular pressure.SOLUTION: The perfusion suction device comprising supply means for supplying perfusate into the inside of a subject eye and suction means for sucking a fluid from the inside of the subject eye through a suction passage comprises: detection means for detecting the mixture of a first fluid and a second fluid in the suction passage； and flow rate control means which controls at least one of the supply flow rate of the perfusate by the supply means and the suction flow rate of the fluid by the suction means on the basis of a result of the detection by the detection means.SELECTED DRAWING: Figure 2【課題】眼内圧の安定性が向上する灌流吸引装置を提供する。【解決手段】患者眼の眼内へ灌流液を供給する供給手段と、吸引路を介して患者眼の眼内から流体を吸引する吸引手段と、を有する灌流吸引装置において、吸引路における第１流体と第２流体との混在を検出する検出手段と、検出手段による検出結果をもとに、供給手段による灌流液の供給流量、および、吸引手段による流体の吸引流量の少なくともいずれか１つを制御する流量制御手段と、を有する。【選択図】 図２
