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.
The most popular unit of measurement used by electricity meter is kilowatt hour. One kilowatt hour is equal to the quantity of power used by one kilowatt of load during a time period of one hour or 3,600,000 joules.Some of the power supplying companies use SI (International System) mega joule as units of measurements in electric meter.he Volt-amperes are the measurement units electric meter use to measures the amount of the entire power moved through a distribution network, including reactive and actual. This is equal to the product of root-mean-square volts and amperes.