Posts Tagged ‘Magnifying glasses’

Magnifying Glasses For Reading: Convenient And Helpful

August 23rd, 2011

As we age, many organs of our bodies deteriorate in function, especially our precious eyes. People in their senior ages know very well the painful difficulty of reading fine prints or small letters up close. It started when they hit 40 and in the beginning they can still solve the problem by holding the reading material further away from their eyes, but eventually their hands aren’t long enough, and they have to seek extra help by using optical devices. At times like these, magnifying glasses for reading come in handy. Also known as reading glasses, these glasses use convex lenses to make the reading material larger so you eyes won’t have any problem focusing.

As probably known by many people, our eyes focus at different distances and go from one distance to another by using the crystalline lens in your pupils. As we grow up, the elasticity of your crystalline lenses becomes weaker, and our ability to focus at close up distance follows suit. Magnifying glasses solve the problem by not allowing our crystalline lenses to change again, but bending the light that comes into our eyes so that the information lies at the right spot for our optic nerve to pick up. By using the convex lenses that makes the reading material larger, they allow the wearer to read fine print with ease.

Like many other glasses, magnifying glasses have gone through some renovation to appeal to broader consumer. One of the useful adjustments are little embedded lights that enable the wearer to read in the dark situation. These magnifying glasses with lights answered a huge desire for convenience and comfort in reading things in the dark. With them, you don’t need to get out of bed and turn on the light before you can read. Just put these little gadget on, and you can read your emergency notes right away.

Unlike prescription glasses that are needed for people suffering from myopia, magnifying glasses can be picked up over the counter at your nearest drug store or in online stores. All you need to do is to find that pair that’s got the required power for your reading problems.

Magnifying glasses for reading aid

August 23rd, 2010

Among individuals over 40 and 50 years old, it is a common practice to stretch the arm to the limit when they try to read up-close materials. Placing a book, newspaper or menu at a normal distance will only lead to a blurry effect. This is very probably the symptom of presbyopia, an age-related vision problem. Like other groups such as the myopia, the hyperopia and even the astigmatic, patients suffering from presbyopia also need to rely on external help or vision aid. Otherwise normal reading is impossible. The solution to presbyopia through corrective eyewear is usually magnifying glasses. It is not difficult to see a senior reading a newspaper with a pair of glasses. Similar to myopia glasses and hyperopia glasses, magnifying eyeglasses are also magic that they can “bring back” normal, clear vision for presbyopic patients.

It is worth stating that presbyopia is a vision condition essentially different from myopia and hyperopia. While the latter two conditions are caused by abnormalities in eyeball shape and are called refractive errors, presbyopia is closely related with the natural lens’ aging and loss of elasticity. As a result, magnifying glasses function in a considerably different way from nearsighted and farsighted eyeglasses. Another difference between magnifying eyewear and glasses for refractive errors is that the first type can be got without a prescription. Pre-made of pre-fabricated magnifying eyeglasses are widely available over the counter. In the 1990s, ready-made magnifying spectacles became extremely popular that over 30 million pairs were sold. This medical practice is completely different from the purchase or selling of myopia and hyperopia glasses which require strictly a valid prescription.

Magnifying glasses have been highly expanded in form of lens power. The most traditional form is regular reading glasses whose whole lenses are equipped with a reading prescription. They are the first choice for people who spend a great deal of time concentrating on near reading. Multifocal forms of magnifying eyewear are thought to be more powerful because they can deal with several conditions within a single pair. Bifocals, trifocals and progressives are currently available.

How to buy a high quality magnifying glass

March 4th, 2010

Magnifying glass, an optical instrument creating a magnified visual image of an object, plays a fairly important role in kinds of researches and people’s daily lives. However, few know how to purchase a high quality magnifying glass. Here are several points as follows.

Firstly, magnifying glasses of high quality are often made from optical glasses or upscale resin pellets with high transparency and low dispersion. Such magnifying glasses create clearer and brighter images with small color differences. Secondly, the mirror surface of a high quality magnifying glass is aspheric. In this way, the imaging within sight is ensured to be of fine definition and low distortion. For the high expense of lens grinding, inferior magnifying glasses are spherical, which get low definition on the brink. Thirdly, a superior magnifying glass should be covered with a film of reflection reducing coating on the lens, so as to on one hand protect magnifying glass from scratches, and on the other hand increase imaging definition. Usually, magnifying glasses with films are of 10% elevated transparencies. Fourthly, judge a magnifying glass by its frame. For durability, excellent frames are usually made from metal frames with certain thickness or plastic frames of high tenacity. Last but not the least, high quality magnifying glasses are marked with explicit names and addresses of manufacturers and detailed brand information, while inferior ones just simply mark the producing places.

In conclusion, points on how to buy a high quality magnifying glass are briefly illustrated above, which are hoped to be useful for you when you are in want of a magnifying glass.

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