| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for improving the intraocular pressure control in a system for microscopic surgical operation using a flow measured value and two injection chambers.SOLUTION: An injection chamber 16 where a drench fluid enters is provided, and desired intraocular pressure is selected. The injection chamber 16 is pressurized by pressure gas to supply the drench fluid to a surgical operation device 29. The flow quantity of the fluid flowing in a passage fluidly connected to the surgical operation device is measured. A signal corresponding to the measured flow quantity is supplied to a computer 28. According to the signal, an estimated value of the intraocular pressure is calculated by the computer. According to a second signal from the computer, the level of the pressure gas is adjusted to keep the estimated value of the intraocular pressure to the neighborhood of a desired intraocular pressure. |
