CRAO is considered a stroke of the eye. Studies show that about two-thirds of patients have underlying high blood pressure and one-fourth of patients will have significant carotid artery disease (plaque with narrowing of the artery lining), cardiac valvular disease or diabetes.
Electrical pressure is measured in volts, or voltage. All electrical devices are rated for specific voltages. Most devices and small appliances in a home are rated for 120 volts, while high-voltage appliances, such as electric dryers, ranges, and many baseboard heaters, are rated for 240 volts.
Watts are a simple calculation: Voltage x Amps = Watts or V*A=W. For home use, you deal with the 120V (standard lights and outlets) or 240V (dryer and oven) and may even be expressed as 110V/115V and 220V to account for voltage line losses within the wiring of the house.