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.
Electricity is measured in watts. For normal residential billing, we use the term kilowatt, which is equal to 1000 watts. To change watts to kilowatts, divide wattage by 1000. An electric meter measures both the kilowatts and the time in hours the electricity is being used.The final billing unit is the product of the two measures and this is called a kilowatt-hour (kWh).o determine your average cost per kWh, divide your total electric bill by the number of kilowatt-hours shown on your bill. Here is an example of three electric bills from a fictitious utility. Notice how the average cost per kWh decreases in the table below.