The MEMORY METAL 202 EYEGLASSES
Memory Metal 202 is an eyeglass frame and it is designed for children who fall over and their parents who must wear glasses. This development allows the metal to withstand a certain amount of bending and then return to its original shape. In addition to being incredibly flexible, the material is very not heavy, very thin, and very comfortable. The rectangular shape is popular with children with a sense of fashion. The choice of colors suits both boys' and girls' tastes and skin tones. Starting with a smooth pink hue, the thin nature of the metal ensures that the color keeps subtle through the soft blue selection.
What is blue light?
To prevent blue light, we must first understand what blue light is. The visible light with a wavelength range of 400-500 nanometers is called blue light. The light sources used in daily LED lighting and display products, including mobile phones, flat panels, and TVs, are mostly LED light sources excited by blue light. However, not all blue light is harmful to the human body. The human eye has an extremely low tolerance to blue light radiation in the 400-440 nanometer range. When the light intensity enters this threshold, photochemical damage is likely to occur. However, blue light radiation in the range of 459-490 nanometers is essential for regulating the human body's circadian rhythm and can affect the secretion of human melatonin, which in turn has an impact on the body's biological clock, alertness, and mood.
Scientifically effective anti-blue light lenses must not only block harmful blue light but also cannot filter beneficial blue light. Most of the ineffective anti-blue light products on the market currently have two types of problems. One is that there is almost no protective effect on the blue light in the vulnerable zone of the human eye. The other is excessive protection, shielding the blue light spectrum in the beneficial band so that the blue light that is beneficial for physiological adjustment cannot enter the human eye. At the same time, the color of the lens is yellow, which is prone to color shift, aggravating visual fatigue, and even inducing the risk of myopia.
How to Get Used to Progressive Lenses?
In this section, we will show you how to get used to progressive lenses.
- Always wear them. If you try and ease your way in by changing them with your previous glasses, it will take a longer time to adjust.
- You need to find and use new areas in your lenses instead of using whatever space is most convenient.
- Make sure you have a comfortable frame that is adjusted for your face.
- Make sure that the optician fits the lens in the right way with the right equipment.
So, if you have difficulty getting used to the progressive lenses, try the above ways.
Have regular professional examinations.
The rimless glasses frame is directly punched on the lens and fasteners are added to fix the lens. It is easy to loosen the lens after long-term wearing. Therefore, it is recommended to regularly check and correct the glasses in the store when wearing rimless glasses. If the protective nut of rimless glasses falls off, stop using them immediately and repair them in time before wearing them. If screws and other accessories are loose, etc, be sure to go to the optical shop by the professional processing division to adjust.
Understand the impact of frame selection on the lens
Frame size is an important consideration when using progressive lenses because some progressive lenses work better in frames of different sizes. Since progressive lenses allow you to see at all distances, it's important that the whole range of vision fits within the frame. Therefore, very short lenses and larger lenses are not suitable for progressive lenses.
Important to measure pupils
The interpupillary distance refers to the distance between the centers of the two pupils when the visual axis is square and parallel. In general, the optical center of the glasses should coincide with the visual axis of the eye when looking at eye level. That is, the optical center distance of the glasses should be the same as the interpupillary distance. Otherwise, visual discomfort will occur, causing visual fatigue and deepening the degree. Therefore, we must improve consumers' awareness of self-quality protection. Understand the knowledge of glasses, otherwise, only mild myopia, the long-term wearing of unqualified glasses will cause the degree to deepen and become high myopia. So be sure to go to a regular optician to get glasses.
The cost of an eye exam
If you have a Walmart Vision Center near you and you need a new or updated prescription, you can schedule your eye exam there. Some vision centers have independent optometrists who work in offices next to Walmart. An eye exam at Walmart costs about $73, depending on where you live. Call your nearest Walmart Vision Center to get the exact price of an eye exam.
