A prescription for spectacles will generally contain the powers for lenses of each eye, possibly also a reading addition power, information on the separation of the lenses and any special requirements for the lenses (eg, type of lens, tinting, coatings etc). Lens power is written in Dioptres, which is 1/focallength(metres). For example, a 5.0D (5.0 dioptre) lens has a focal length of 0.

Compliance with requirements to wear safety glasses used to be a big problem in industry. However, safety glasses have become much more lightweight and stylish, to the point where workers actually want to wear their safety glasses. If you offer a selection of stylish safety glasses, that are appropriate for your work environment, you will find that compliance is no longer a big problem. No, OSHA does not approve safety glasses, or any other personal protective equipment for that matter. See similar questions...

Safety glasses are required to be tested to ANSI Z87.1-2003. This standard includes optical requirements as well as physical requirement. Here is a list of the tests that are required: Frame shall be capable of resisting impact from a pointed projectile weighing 500g (17.6 oz.) dropped from a height of 127 cm (50 in.). Spectacles shall be capable of resisting impact from a 6.35 mm (1/4 in) diameter steel ball traveling at a velocity of 45.7 mps (150 fps). See similar questions...

restore your focus to normal, minimizing your dependence on glasses. Most people need some form of glasses, if only to read. See similar questions...

You will need an up to date prescription (less than 2 years old), Your P.D. measurement ( see how to measure my P.D.) and a rough idea what size frame you need ( see how to obtain frame sizes) See similar questions...

If you use lathes, saws, sanders and other power tools at home, you need protective eyewear. It should cover not only the front of your eyes, but also the sides and top, so small airborne particles can't get in. Hardware stores sell shields that will usually fit over your glasses. But if you work with tools a lot, you'll avoid fogging problems and be more comfortable if you buy a specially fitted pair of safety glasses with polycarbonate lenses and frames from an eye care practitioner. See similar questions...

Each year in the United States, thousands of people are blinded from eye injuries in the workplace. With the proper use of protective eyewear, up to 90 percent of these injuries can be prevented. Find out more about common causes of eye injuries in the workplace and what you can do to prevent them. Also OSHA, the Occupational Health and Safety Administration, mandates the use of safety glasses in certain types of workplaces where eye injury is foreseeable. [Back to Top] See similar questions...

During the eye test, your Optician will assess the degree of focussing errors in your eyes. From the results of this test, he/she will prescribe appropriate lenses for you. The optician will then complete a prescription form that describes precisely the specification of the lenses needed to correct your eyes' focussing errors. You are under no obligation to purchase glasses with these lenses from the optician that tests your eyesight. Under English law, you may buy your glasses from elsewhere. See similar questions...

Polycarbonate gains its strength from being flexible instead of rigid. Because of this Polycarbonate lenses are prone to scratching, and are therefore usually protected by a hard coating. Even with a hard coating Polycarbonate has to be handled carefully, and should cleaned with soap and water and dried with paper tissue. See similar questions...

Yes, Elvex offers different solutions to avoid fogging of safety glasses. Certain designs that provide a space between the face and the lens allow for air circulation and help minimize fogging problems. Examples: UniWraps, SG-20, Challenger, SG-25, Summit II, SG-29, Orbit, SG-36 We also offer several models with anti-fog coated lenses. The product number includes an AF designation after the regular product number. See similar questions...

Yes, we offer a couple of styles that are smaller or have a more aggressively curved lens. Elvex TTS, SG-15-small, Challenger Small, SG-23, fit small featured adults as well as many children. Also our models TNT SG-13, Xenon, SG-14, Trix, SG-17, Elite, SG-200 and Summit II, SG-29, offers a good fit for women and small featured adults. Click on the links below. TTS, SG-15, Challenger S-SG-23, TNT- SG-13, Xenon- SG-14, Trix- SG-17, Elite- SG-200, Summit II- SG-29, See similar questions...

Several models in our product line offers both angle and length adjustment of the temples. The angle adjustment allows the lens to be tilted so that it offers the best possible protection for the job at hand. This feature is also helpful for individuals with asymmetric faces (it is common that the right and left ears are at different heights). Models with both length and angle adjustment: UniWraps, SG-20 , Challenger II, SG-26 (being discontinued), Bifocal Safety Glasses, RX-100. See similar questions...

A prescription is not required to purchase Dynamiclear. This is because Dynamiclear can be safely applied, is non-toxic and is not taken internally. Dynamiclear is a topical skin application (it is applied on to the skin like an antiseptic lotion) and is made of naturally occurring substances. See similar questions...

We offer a FREE LASIK evaluation at our East Beltline location. You may present your glasses or your glasses prescription to any staff member at any of our 7 locations to determine whether or not your prescription falls within the guidelines the FDA allows us to correct. We also offer a FREE LVC seminar once a month. See similar questions...

Typically a person's vision will fluctuate from birth through childhood and up to approximately eighteen years of age before it stabilizes. At forty years of age, difficulty with near vision will occur and continue to progress up to approximately sixty years of age. See similar questions...

Usually not for distance vision, although some patients may still require thinner glasses for fine tuning. When you are in the age range where bifocals or "readers" are normally required for close vision (usually 40-45 and beyond) you will most likely need reading glasses. This is a natural process known as presbyopia. See similar questions...

Yes, usually to read small print. Currently, nearly all lenses implanted in the USA are monofocal. This means they focus at only one particular distance (focusing distance depends on lens power). If your lens gives you perfect distance vision, you will have to use glasses to read. If your lens gives you perfect reading vision, you will have to use glasses to see clearly at distance. See similar questions...