ANORDNING FOER KONTROLL AV VAETSKETRYCKET I OEGONGLOB.

摘要

An ophthalmic device and system for measuring and controlling relative fluid pressure inside an ocular globe includes a surgical instrument (60) which is adapted to penetrate the ocular globe. A fluid pressure transducer (65) is mounted on the instrument so that when the instrument penetrates the ocular globe the transducer is located adjacent to an opening that communicates with the interior of the globe so that it can react to pressure changes in the fluid therein and generate signals in response to changes in the pressure of the fluid. The signal is transmitted external of the instrument to a control system (105) which is operatively connected to the transducer (65) for first receiving signals from the transducer and then controlling a fluid supply system in response to signals according to a predetermined set of instructions. The control system (105) is connected to a closed loop feed system (110) in which fluid is continuously circulated. Fluctuations in intraocular pressure cause the control system to divert fluid from the feed system to the ocular globe to a conduit (104) connected to the closed loop.