Ocular Pnuemo Plethysmograph, model OPG-2 LP, by Electro-Diagnostic Instruments. Measures ophthalmic artery systolic pressure, or blood pressure of the eyes. This device applies a vacuum to the eyes to create the intra-ocular pressure ended to obliterate eye pulsations form normal blood pressure, then reducing the vacuum at a controlled rate until the pulsations reappear.
Comes with complete operation instructions. Bilateral simultaneous measurement of Ophthalmic Systolic pressure 2 channels strip chart recorder Built in vacuum source Self calibration External connections Wired for 105-130 VAC 60 Hz Includes 4-wheeled cart We do not warranty or refurbish medical equipment. No manual or peripherals included.