Tips for choosing the best lens frames if you are USA or Canada
Lens frames are a vital accessory which many people reading this article will be of great utility.
Already it is complex choose the frame spectacles that fit you well and you like. Apart from this you have to choose the lenses and coating. These decisions are key as to how well you’ll be able to see and how much money you spend.
Americans and Canadians disburse an average of $ 248.9 for his new glasses, without which covers insurance, and most of that money is for the same lenses and does not include frames or frame.
You cannot always rely on vendors to guide you as they can work on commission.
IN SEARCH OF LENSES
The two most popular lenses are the most basic: the CR-39 and polycarbonate plastic both. (Few people now use glass because they are heavy and fragile). If you have a prescription monofocal (or serving glasses for distance vision or for near), you can usually opt for the CR-39 lenses.
They are usually inexpensive, but they may look coarser with recipes graduation.
A more durable, thin, light and popular option is polycarbonate lenses, which random price can range from $ 9 to $ 205. Even some retailers sometimes offer these lenses free as part of their packages. If you need glasses to see both near and far, lens options become more complex.
Here we show you four options:
They provide smooth and gradual change in power of the lens to see well at all distances. Consider them if you need glasses for distance vision and reading and find that the split of bifocals or trifocals surface is uncomfortable. More expensive than bifocals ($ 105), which can take you days or weeks to get used if the lenses are made with the CR-39 or polycarbonate?
They offer sharper vision and better peripheral vision than basic lenses. You may want to opt for them if you have more complex visual problems such as cataracts or corneal scarring.
They are very thin and light, but unlike other thin lenses, they will work even in the case of recipes with higher rankings.
They are extremely resistant to scratches and impacts. They can be useful if you use rimless frames or partial frame, or if your tendency is not care much your glasses.
COATINGS TO CONSIDER
Lens coatings are designed to protect your eyes from the light or increase the durability of the lens.
These are the five common treatments you should know:
It is usually a good choice for all and 95 percent are plastic lenses. Check the warranty; some retailers like Solumax Frames will replace scratched lenses during the first year after purchase, for free.
Often it included with high-index lenses and HD, used to be difficult to clean and remove stains, but now come with an anti-stain / anti-fog technology. If you have trouble seeing properly when you’re on the computer, when you’re driving, and at night, consider them.
A good idea for most people, because the sun’s UV rays can increase the risk of cataracts. Most lenses come with this coating; make sure you have yours too.
It obscures the sunlight and protects you from UV rays. It is useful if you prefer not to wear glasses separate sun.
Coatings that block blue light
It is said to reduce exposure to LED light computer screen. (Some studies suggest that excessive exposure can damage the retina and increase the risk of macular degeneration and age-related cataracts).
Average measures of frames:
The mounts are standard measures that we use to compare metrics monturas.6 this system has a first number followed by a separator square and two other numbers.
The first number indicates the diameter in millimeters of glass, the second number indicates the width of the bridge and the third the length of the pin, also in millimeters. These measures allow comparisons between different models. The last two measures, the bridge width and length of the leg, are most influence the ease of use of glasses Solumax.