Oculoplethysmographs that record data on blood flow in the eyes. These devices are used to obtain data used for calculating opthalmic artery pressure, for detection and assessment of diseases related to carotid arteries.
1. Three types of these devices are available: vacuum OPG, air OPG, and air-filled cuff systems. Each type has certain benefits and drawbacks.
2. Facilities eventually choose the right type for them based on the end user's choice of technique.
3. When purchasing a vacuum or air OPG, buyers should also consider the cost of eyecups.