reading glasses with different power for each eye


How to Write Critical Reviews of Journal Articles

Writing a critical review of an article published in a scholarly journal is a common assignment for students enrolled in a higher education course. While many students equate the word “critical” with “negative,” this is not necessarily the case; it simply means the review should be objective and examine both the negative and positive aspects […]



How to Read .Txt Files With Kindle

The Kindle e-book reader is the best-selling product on Amazon.com, the website that created the Kindle. Users can choose from thousands of books, magazines and other items to purchase and download to the Kindle directly from Amazon’s Kindle store. Kindle owners aren’t limited to documents purchased from the Kindle store, however; documents in certain file […]



How to Read Tractor Tire Sizes

Even the tires on your trusty tractor eventually need to be replaced. Whether it is from natural wear and tear or from accidental damage, you need to know the size of your tires to replace them. You may have noticed that tractor tires are marked differently from the tires on your car or truck. While […]



How to Read the Lines on a Heart Monitor

You may not be a cardiologist, but you can glean a certain amount of information from the lines on an electrocardiogram (EKG). Still, it’s important to leave the true reading and diagnosis to trained healthcare providers whose profession it is to detect abnormal sinus rhythms. Deciphering peaks and valleys Compare your EKG to the normal […]



How to Repair a Corrupt SD Card

SD flash memory cards are convenient for portable data storage and moving data from one computer to another. They are also commonly used in digital cameras to store pictures and to make them easily transportable to computers and printers. Occasionally, you may find that you cannot access the data on a card. This can range […]



How to Read From an Input Stream in Java

The Java language provides a range of standard functions for input and output. You can easily make use of these functions within your programs, allowing you to process input from external resources, such as files. Using the Input Stream classes in Java, your programs can read data from a specified location. The InputStream class itself […]



How to Read a Houston, Texas Water Meter

A water meter is a useful house appliance that helps to keep track of the amount of water usage. In the 2000s, Houston, Texas faced problems involving poor, unclear and inaccurate water meter readings due to some new and inefficient electronic meters. Checking your water meter reading at least once a month, if not daily […]



How to Read a Navionics Card on a PC

Reading a Navionics card from the comfort of your personal computer enables you to check your Navionics maps from home. Accomplish this by using a USB-compatible Navionics map card reader that enables you to connect your Navionics map card to your computer's USB ports. The linking process typically takes less than five minutes to complete. […]



How to Read Music Notes for Snare Drum

A snare drum is one that’s usually small in size. It’s often used in a marching band for a drummer to carry at his side. It’s called a snare drum because it has snares that line the lower head, and they reverberate for sound effect. Reading musical notes is something that one should ideally understand […]



How to Become a Blueprint Reader

Blueprints are the technical drawings created for the construction and manufacture of homes, structures and parts. Blueprints use highly specialized symbols and designations that tell builders, machinists, welders, engineers and others exactly what materials must be used and how items are put together. They help to coordinate the work of many kinds of workers to […]



How to Read a Stock Ticker

Edward Calahan invented the stock ticker in 1863 and the New York Stock Exchange installed the first stock ticker in 1867. Messengers used to run price updates from the exchanges to brokers’ offices prior to the ticker. You may spot stock tickers scrolling across financial websites or on digital displays inside and outside financial buildings. […]



How to Read a Geiger Counter

A Geiger counter detects ionizing radiation such as beta and gamma particles, and some models also detect alpha particles. The primary component of the Geiger counter is a tube filled with a gas that conducts electricity when struck by radiation. This allows the gas to complete an electrical circuit. This typically includes moving a needle […]



What Is a Normal Pulse Oximetry Reading?

A pulse oximeter is a medical device that indirectly measures levels of hypoxia. The device senses levels of oxygen saturation in arterial blood using spectral analysis, along with pulse rate. Generally, oximeters are accurate in measuring oxygen saturation between 70 and 100 percent. Significance A pulse oximeter is a medical device that measures levels of […]



How to Know What Strength Reading Glasses You Need

As people age, they often develop presbyopia, the inability to focus on things close at hand. Bifocals are meant to correct this, but many people find them disorienting or excessively expensive and choose reading glasses instead. Drugstore reading glasses cost less than $10 on average and come in a wide variety of strengths and styles. […]



How to Read Blueprints of Buildings

Blueprints are a set of drawings that guide architects and builders on how to construct a building. Because buildings are large, blueprints are drawn to scale, meaning they are drawn smaller than the actual building measurements but are drawn in correct proportion to each other. Blueprints are often created using computer assisted design, or CAD, […]



How to Learn to Read Minds

Mind reading is a useful skill in uncovering the intentions and motivations of people. It begins at birth–newborns are more interested in human faces than any other visual, and they are instinctively able to recognize when a parent is happy or sad. Whether it’s a mother attempting to understand why her baby is crying or […]