What Are Transition Lenses?
Transition lenses, also called photochromic glasses are eyeglasses lenses that change their colors with light. The transition lenses darken in the sunlight and lighten in the softer light or the dark. These transition lenses provide the convenience of sunglasses without having to wear them over your prescription glasses and having to constantly switch between the two.
But there are some common transition lenses problems. So, we will list some of them. Are transition lenses worth it? After reading this post, you will find them.
The price of new lenses
The price of the new lenses depends on several factors, including if you have vision insurance. Another aspect to think about is that if your lenses need an anti-glare solution. If so, the lenses may be much more expensive. If you need eye exams and special lenses, the cost can be quite high. Scratched lenses are easier to repair. If you want your scratched lenses repaired by a professional, most opticians can pay very little.
How about buying glasses online?
The benefits of online glasses matching for merchants are that there is no need to rent a physical store, no need to decorate the store, and no need to keep a lot of inventory, so a lot of expenses can be controlled. And now there are many online shop glasses businesses, and the price is more transparent. For the price, online glasses are very advantageous. In order to match comfortable glasses, you need to have a certain understanding of their own appropriate glasses.
What is a progressive lens?
Progressive multifocal lenses are lenses with different upper and lower powers for seeing far above and below for seeing near. The distance from the fixed far power above the lens to the near power fixed below the lens does not change suddenly, but a gradual transition between the two through the gradual change in refractive power. Compared with ordinary lenses, there are many advantages. The appearance of the lens is like a single vision lens, and the dividing line of the power change is not visible. Not only is the appearance beautiful, but more importantly, it protects the age privacy of the wearer, and there is no need to worry about revealing the age secret due to wearing glasses.
Since the change of the lens power is gradual, there will be no image jump. It is comfortable to wear and easy to adapt. So it is easy to be accepted. Because the degree is gradual, the replacement of the adjustment effect is gradually increased according to the shortening of the short distance. There is no adjustment fluctuation, and it is not easy to cause visual fatigue. Clear vision can be obtained at all distances in the visual range.
Such a pair of glasses meets the use of long-distance, near-use and various distances in the middle at the same time. It is especially good news for teachers, doctors, music workers, and computer operators, because these people not only need to see far and near objects clearly, but most of the time they also need to be able to see middle distance objects such as blackboards, piano scores, and computer screens. . This is not possible with any lens other than progressive lenses.
The Price of Progressive Lens
On both sides of the lens of the progressive lens, some places are deformed, which makes the image blurred. In addition, it has a narrow field of view in the near and middle distances. The narrow focus point for a long time can easily make the eyes tired. It is suitable for the alternate vision of far, middle, and near. Under normal circumstances, the price of the progressive lens is different from the purchase merchant, region, brand, and quality, but the price of the progressive lens on the official website is between 30-85 US dollars. Of course, some products will be less than $30, or more than $85.
Does it matter if the frames are broken?
If the frame is broken, there may be inconsistencies between the left and right temples. This will cause the lens optical center shift, long-term wearing will make teenagers feel dizzy and vomiting. Many people will be attributed to the high degrees of this situation. The position of the nose pads is not consistent: this kind of lens deviation from the left to the right causes the prism effect, which makes the wearer can not see clearly, blurred. When the temple is too loose or too tight, it will affect the comfort of wearing the glasses, and the excessive pressure on the temple will cause pain in the head.
Identify the lenses of discount glasses
Look at the overall package: let him show you the overall package of the lens. See that if the factory is in China, Shanghai, China, or Zhejiang, China, etc. Look at the anti-counterfeiting logo. It doesn't necessarily mean it's good. Check the production plant, address, news, etc. In short, lens judgment, for the average consumer, is difficult, but when you put forward these requirements, the store will at least think you are more professional.
