Which Prescriptions Go With Which Lenses?

You’re ordering glasses online.

You enter your prescription and your pupillary distance. (The pupillary distance, abbreviated PD, is the distance from the center of one pupil to the center of the other pupil. It’s as necessary as your prescription to get glasses online.)

The website you’re ordering from reads these items then recommends a lens for your eyeglasses.

How does it know which lens is right for you?

Here’s how. Each optical lens, from standard index to high index, from single vision to multifocal, accommodates a particular prescription range.

Let’s take a look at the various prescription lenses optical retailers offer, the various prescription types, and the prescriptions within those types the lenses cover.

The two broad prescription categories are single vision and multifocal. Multifocal prescriptions consist of bifocals and progressives.

Nearsightedness and farsightedness are corrected according to the numbers in the Sphere (SPH) section of a prescription. Single-vision prescriptions for nearsightedness can be filled up to -20.00, for farsightedness up to +12.00.

If you have an astigmatism, this will be indicated on your prescription by numbers in the Cylinder (CYL) and Axis (sometimes abbreviated “X”) fields. For single-vision prescriptions, meaning those with no numbers in the Near-Vision Reading ADDition section (NV-ADD or just ADD), Prescriptions in the CYL section can be filled up to + or – 6.00. The numbers in the Axis or X section just refer to the angle at which the CYL, an actual cylinder that’s invisible to the wearer, is placed on the lens.

A tiny portion of eyeglasses wearers have prism corrections on their prescription. These can be filled for single-vision (not multifocal) prescriptions up to 5.00 in any base direction (base up, base down, base in, or base out).

For people who have numbers in the NV-ADD section of their prescription and want to get the type of multifocal glasses known as bifocals, which are eyeglasses with a lined reading-addition segment at the bottom of the lens, prescriptions for nearsightedness can be filled up to -9.00 and for farsightedness up to +6.00. You can go up to +3.50 on the NV-ADD.

The type of multifocal eyeglasses known as progressives are glasses with no visible line between the three different focal segments, which are distance (driving and watching TV) vision at the top of the lens, intermediate (computer) vision at the middle of the lens, and near (reading) vision at the bottom of the lens.

Prescriptions can be filled with higher corrections for progressives than for bifocals. Most progressives go up to -10.00 for nearsightedness and up to +8.00 for farsightedness. Just like with bifocals or single-vision glasses, the CYL correction goes up to + or – 6.00. And just like with bifocals, the NV-ADD goes up to +3.50.

Here are the specific single-vision lenses, with the prescriptions they accommodate.

For the mildest of single-vision prescriptions, those ranging from -2.00 to +1.00 or lower on the SPH and +/- 2.00 or lower on the CYL, the recommended lens is the 1.50 standard-index lens.

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Computer Profession in Career Astrology

Astrology is no doubt a Vedic science by which one person can get a clear picture of his life if the analysis and calculations are taken into consideration in right means. Accurate employment probabilities are calculated by an efficient astrologer by carefully observing ones horoscope.

Factors responsible for computer profession

· Ascendant: general physical and mental abilities of the native

· 2nd house: significator of higher education, communication and speaking

· 3rd house: distance communication and transmission

· 5th house: intelligence and competition

· 7th house: business and service sector

· 10th house: main significator of profession and means of live hood of the native

· 11th house: income

· Rahu [dragon head]: signifier of electronics

· Mercury: significator of calculations, accountancy, statistics and mathematics

Venus: learning, expert mathematician,

· Saturn: stands for machinery

Jupiter: highly educated, learned and, ambitious

Different combination for computer profession

Jupiter in trine / quadrant, Venus is powerful and Mercury in the 2nd, the native will definitely opts for the computer profession

Jupiter in trine/quadrant, either Venus or mercury is exalted, the native will select computer line as profession

· Mars is posited in 2nd and aspected by benefit planets or Mars and moon combined in 2nd, the native will get a job in computer field.

· Rahu in 2nd, indicates computer education

· Jupiter is powerful and influencing 3rd/4th/6th/10th houses

· Mercury and Venus related in healthy way

Horoscope of Bill Gates [28/10/1955]

Ascendant –Gemini; Jupiter — 3rd house; Mars and Mercury -4th; Sun, Venus and Saturn — 5th; Rahu– 6th; Moon — 10th; Chief — 12th.

Lord of ascendant Mercury is exalted and aspecting 10th,

Jupiter as 7th lord is aspecting 7th

· Lord of 9th [fate] Saturn is exalted and associated with Venus [the lord of 5th, indicates intellect and basic education] and Sun [the lord of 3rd, indicates communication and transmission].… Read More

Online Training Options for Computer Education

Computers perform multiple functions everyday that propel the technological aspects of life forward. Online banking, storing information, and receiving an e-mail are just a few areas that computer use can be seen. Online accredited schools that offer computer education prepare students to enter a variety of careers after successfully completing training.

Online education in computers is a great way to learn the procedures and programs that are used inside the professional industry. With training options available online, students can continue to work and attend school. Students will find many available options for their desired educational level. Available online training includes:

  • Certificate Programs
  • Associate Degrees
  • Bachelor Degrees
  • Master Degrees
  • PhD Degrees

Students learn specific areas of their chosen field at each level. Associates and bachelors degree programs lay a strong foundation and graduate programs provide students with advanced concepts. Through specific study, students can enter a broad range of careers from entry-level to teaching. Certificate programs can be gained before degree training or after, meaning that some careers only require a certificate for work. Students may also complete certificate programs after schooling and while working in order to learn a new technology or to refresh themselves on a topic. Education is essential in this industry for both the competitive and knowledge components. Some major areas that students can find online degree programs in may include:

  • Computer Information Science
  • Computer Science
  • Computer Technology
  • Software Engineering

Students learn to work with computers in multiple areas, which includes understanding how to create, repair, design, and implement different programs and systems. The field of interest for students determines what they will accomplish when they enter a career. For example, a student that enters a computer technology online program will learn how to repair and manage computers. Installing, supporting, and troubleshooting systems are the main areas that will be addressed in an online program. Certificate and associates degree programs are the general requirement for a career.

Another popular area of ​​the field is software engineering. Students can enter education at all levels and learn to develop and maintain computers along with the software used to run them. In an associate’s degree program students learn fundamental knowledge on different operating systems and computer technology. Programming languages, interface design, and quality assurance are areas that are explored in more advanced training at the bachelor’s degree level. Graduate education online trains students for management and teaching careers.

Computer education is a vast field and students can study its many faces through online education. Students can begin training for the future by researching their chosen field and knowing what educational requirements there are for their desired career. Fully accredited programs provide proof that they can offer students the best quality education they deserve and desire. Agencies like the Distance Education and Training Council ( http://www.detc.org ) are approved to accredited qualifying schools and colleges. Students can enter the computer industry today by completing an accredited degree program.… Read More

Samsung I8510 – The Best Gadget With Sophisticated Features

Samsung, one of leading and best mobile manufacturers in the world of mobile phones, is known for its high-quality electronic products. This renowned electronic company, a few years ago, extended its services to the mobile segment to serve good and reliable quality phones with smart looks and advanced technology features to the users.

As the modern mobile users are demanding for the most innovative and high-end features mobile phones, like most of the mobile manufacturers Samsung is also started releasing mobile phones with all the multimedia and professional features.

One of the latest mobile phones from Samsung is the Samsung i8510 gadget that has been offering ultimate delight to the users ever since it has been launched in the market. To grab the attention of the users at a very first sight, this fascinating mobile phone comes with a wide 2.8 inches TFT display with 16M colors that offers an exceptional resolution of 240 x 320 pixels and comes along with an accelerometer sensor for auto-rotate and has a Optical Mouse. This bright and colorful display allows the users to have a clear and perfect view of videos, pictures, messages and contacts on it with ease. Moreover, the advanced technology sensor and optical mouse features help the users in typing messages as well as in navigating all the options of the phone with ease.

When it comes to available memory space, this Samsung i8510 handset comes embedded with 8/16 GB of internal memory, 128 MB of RAM memory along with a microSD (TransFlash) card slot that can be expanded the external memory of the phone up to 8 GB. This storage capacity allows its users to save and download the large amount of data in the form of contacts, images, music, games, videos including personal and professional files.

One of the most fascinating features of this sophisticated mobile phone is its power-packed digital camera of 8.0 mega pixels that offers a high quality resolution of 3264 x 2448 pixels and comes with all the advanced functions and modes like autofocus, image stabilizer, video( VGA@30fps, QVGA@120fps), flash and has a secondary videocall camera for making video calls. To prove it as a complete and powerful camera mobile phone, it also comes with Camera geo-tagging, auto-panorama shot, face, smile and blink detection features. This digital camera allows not only the professionals but also the beginners in the world of photography to take images with digital and crystal clear quality.

Now, the users can enjoy their favorite music as well as they can watch their favorite movies, even while they are on the move, as this Samsung i8510 INNOV8 mobile phone comes embedded with a DivX/H.263/H.264/WMV/ MP4 video player, an MP3/eAAC+/WMA/AMR/Real Audio player besides FM radio with RDS application. All these multimedia features offer ultimate delight and world-class entertainment to its users. To share messages and send mails to your friends and family members, this highly durable mobile phone has messaging options like SMS, MMS, Email, Push Email and IM. High-speed Internet connectivity … Read More

History of the Computer – Real-Time Systems, Part 1 of 2

We have mentioned before, in the history of the computer series, that digital computers have been developed as general purpose machines. You buy one of our systems, and you can use it to run a bank, operate the lottery, build a car, or control freight shipments for an airline.

Of course there are differences in hardware, mainly in peripherals, depending on the application, but generally a modern computer is still a multi-purpose beast. The main difference is in the software.

One of the most critical applications, using the latest developments in a combination of hardware and software, is the Real-time system. It produces state of the art performances, and has to be reliable.

What is a Real-time System? The name says it all – everything this system does with the data you give it, it does right now, in real time.

NON REAL TIME SYSTEMS

It may be easier to understand the concept if we look at what is NOT a Real-time system. A typical use of a computer is to work out statistical information.

Say you want to do a comparison of the number of smokers in the community today, compared with 10 years ago. (Fortunately you have figures obtained 10 years ago!) You hired a consumer research organization to interview a cross-section of the community, asking the same questions used in the original survey.

This company sends out researchers to stop people in the street and ask them the questions. In order to get a similar cross-section to the previous survey, they interview perhaps 25% more than the final number required.

The survey sheets are sent back to the head office, where they are keyed in to a computer database by the head office staff. An analyst works out a program which will select the appropriate survey data, and compare to the original survey. It produces tables and charts of all sorts of things, to justify the cost and time involved.

This process has taken perhaps 3 months, and employed quite a few people. Total computer processing time? Maybe one minute. This is not Real-time as far as the computer is concerned.

These other uses for computers are no less important, their applications are many and varied. A computer at a university may be used for research, or administering examinations, and scheduling tutorials. One at an electricity supplier might be used for customer accounts and billing. There could be more to the uses applied than billing. A link may exist to a government agency for cross-referencing names and addresses – most people use electricity!

REAL TIME SYSTEMS

Now consider the following. An airline has a maintenance base for its fleet of aircraft. These aircraft are required to be serviced at regular intervals, based on the mileage flown. They also require repairs based on faults reported by the flight crews or maintenance engineers, on a per flight basis.

The maintenance base carries a large supply of parts ranging from nuts and bolts to complete engines, and including such things … Read More