In recent years, many people who are suffering from presbyopia have selected and fitted progressive presbyopia lenses because different focuses are provided continuously on a lens. Therefore, the wearer simply use a pair of sunglasses, can see far, middle and near objects. In fact, there are some tips for wearing a progressive lens. Progressive eyeglasses for many people are convenient, but there are a lot of people who first wears at the beginning feeling a bit difficult to adapt to.

Firstly we should first know the principle of a progressive lens if you want to wear it in a comfortable way. A pair of progressive men sunglasses with precision should have played different roles while in the different regions of lens. For example, the wearer is the location of the pupil, is used to see distant objects will be accompanied by far with degrees; to clearly see distant landscape, the wearer must be goal-oriented, then straight to look to the former.

The place of lower lens is for viewing nearly, and provided with such degree. When the wearers are reading or viewing articles at near distance, they can make their heads forward slightly, and keep theirs eyes seeing downwards to utilize the lowest part o What should be noted is that the diopter of both sides of the lenses will gradually change. If the wears only rotate the eyes form right to left to see the objects, the objects will blur or distort. That is why many first wearers feel fatigued. Moreover, computer users used to prolonged use of computers and read the papers so that they will have more large demand of middle and vicinity.

Progressive lens eye in close-range is usually narrow, not suitable for such a long time to read generally. In the case of the degrees of presbyopia or above 175 degrees and often need to look at almost anything in the indoor, then they could think over fitting a dedicated, the close of the progressive lens.

Even though, it not to suit sunglasses frames looks the distance, but it has a wider optical zone in the design, the effect will be more satisfactory. Who are easier to adapt to progressive lens do? In general, the more the degrees lower, the more the people are easier to adapt. When presbyopia reached 100 degrees, you should consider wearing a progressive lens, or will be a longer adaptation period in People’s short sights about 200 to 800 degrees are also easier to adapt to those. Compared, some people with slight myopia or hyperopia need more time to be familiar with progressive glasses.

But not all of people are suitable for wearing the progressive glasses. If the degree’s distance between two eyes is too great, the wearer will feel very exhausted easily when he focuses on watching something. When fitting the wearer progressive glasses, you can ask for advice from your optometrist to assess whether you are suitable for a gradual wear glasses, and selecting the most appropriate design regard to your degree and the function that fit you. After the fitting, you should not forget to adjust the frame position frequently, because the position deviation can also greatly influence vision correction effect and vision.

When fitting presbyopic glasses, you should conduct comprehensive examination for the eyes of the old people, including distant vision, near vision, refracting media, and eye fundus, especially observe whether cataract, glaucoma and eye fundus diseases ex

Distance vision is above 1.0 but near vision is below 1.0, just need to correct near vision, if cataract results in the distance vision, when you correct it, near vision must be to measure the distance vision as the standard.

Today, more and more people have started to wear tinted optical and tinted eyeglasses with diopters. In fact, people who wear optical eyeglasses seldom know how to choose the color of lenses in a right way. Here are some opinions about how to choose the lenses color for your reference.

A large amount of customers ought to choose grey or graduated lenses in the first way. Their transmission for many spectrums of the visible light are almost the same. Tawny lenses are another good choice, It is better to looking into the distance by wearing it. The laurel-green lens can make people happy and help to ease fatigue. Lenses of different types of light colors can show marvelous effects by corresponding with your clothes and make-ups.

Some colors are used to protect the industrial workers’ eyes. For example,

Dark red is used by X-ray medical personnel,
Yellow lenses enable shooting athletes to see clearly even in foggy days.
dark lenses are always used by electric welders.
Blue lenses are for steelworkers to work beside high temperature furnace.
Some work demands highly on vision, color and distance seeing. Some works need a good sense of sight, mainly focus on eyesight, colors and distance. What consequences do so if not to have?

What will take place if they don’t do so?

Purchasing optical, people should choose the normal manufacturers and the productions which are produced by the certain famous enterprise. Because fake products and low-qualified ones usually haven’t qualified the inspection, and their quality can not be guaranteed, Such glasses not only can not protect our eyes, but also do a great harm to our eyes when wearing for a long time. Then how to distinguish the ture and false famous band sunglasses?

In fact, it's quite easy. The optical eyeglasses are different from fashion and bags which has their own type and color code. These codes are set by manufacturers. If the style and the model of the product do not match the product model on the authoritative website, of course it is the counterfeit. Through this way, those self-prepared types of fakes can't hold water and are forced to let the cat out of the bag. There is another possibility that bad-intentioned sellers have taken the genuine pictures of others as their own, But the products that buyers receive are similar but fake ones. So, it is better to select sellers having picures in kind or better public praises.

Another way to distinguish the genuine from the fake is to check whether the sellers provide the certificate of the sunglasses. There are lots of famous glass brands in Italy, and there are lots of glass producing companies known by the world, too. Safilo Group is the biggest glasses manufacturer in the world and its headquarter is located in Italia. All the top class famous brand sunglasses in general are their products. Brand-name glasses such as Burberry, Dior, Gucci, Armani, Valentino, and YSL are all manufactured by Safilo. They control the distribution channel strictly and don't allow productions of being wholesaled at random.

In the United States, only the national qualifications related shops can purchase goods from the safio, and there will be professinal persons supervising sellers and patent stores, not allowing to take hostile competition by reducing prices. Each pair of Safilo optical glasses will accompany by a certification when leaving the factory, so we should say that the ones which have been made by Safilo without certificates are fake ones. Finally, it absolutely does not mean that expensive items are genuine ones, people should also abstain from being seized by someon due to such psychology.

It’s very inconvenient to wear heavy optical eyeglasses, especially in summer when people go to the beach. Frame glasses are not suitable in some occasions either. Therefore, contact lenses become an alternative for frame optical glasses to women. Contact lenses give many short-sighted much convenience as well as a lot of beauty.

However, some people wear contact lenses for too long time and even don’t put off them when sleeping. In fact, contact lenses should not be weaing more than eight hours. There are long-acting contact lenses advertisements on the market which says you can wear contact lenses for one week continuously. They are actually unscientific propaganda. You had better not wear contact lenses over night, and wear them in the day and put off at night. No matter how effective contact lenses can last, they can not meet full ventilation.

It's easy to let the leaf mold have the opportunity of growing and then result infection. As the contact lenses is not taken off at night, it can not be cleaned timely, dirt like dust in the air may accumulate on the contact lenses, which may easily cause conjunctiva infection. Many people have the habit of siesta. It will be best for you to take off contact lenses and put them in the matching tending liquid. You may wear them after you wake up and wash your face. It will give the eyes the same rest and relaxation as body, as which creates opportunities for eyes breathing happily. It is necessary to wash after waking up, impurities and dust in the eyes will be cleared out, which is more conductive to health and eye protection.

Some are wearing contact lenses when taking baths. Shampoo and bath liquid will immerse in the eyes which will pollute the lenses and cause eye irritation. Some people even drop their contact lenses in the bathtub when taking a bath. Therefore, when you are taking a bath, you ought to take off your contct lenses or men sunglasses,

In addition, it's still to be mentioned that people who just wear contact lenses should not wear them for a long time, it will be suitable to wear them for four to five hours. Once you fell the eyes tired, immediately remove contact lenses and gradually adapt.