Different Type of Lenses: How to Choose
High-index lenses: These lenses are thinner and lighter than CR-39 plastic lenses because they have a higher index of refraction and may also have a lower specific gravity.
Trivex lenses: Trivex lenses are made from a newer plastic that’s similar to polycarbonate lenses. They are lightweight thin, and impact-resistant.
Aspheric lenses: Aspheric lenses have various degrees of curvature, which means they can be thinner and flatter so you can use a much larger portion of the surface.
Sunglasses For Fishing - Prosun
The headquarter of Prosun?is located in Xiamen City, Fujian Province. ?In the development process of more than 20 years, Prosun?has been committed to the research and development of optical products. The product design style has closely followed the trend, and the quality materials have useful workmanship. And the comfort is continuously improved, with the combination of fashion design concept and science. It is committed to providing young people's favorite glasses products.
Why are eyeglass frames are so expensive?
Good frames and bad frames are very different just in how they feel. The bigger the brand company, the more money it invests in the design, research and development, production equipment, and equipment of the lens frame every year, so as to improve the wearing comfort and improve the combination and precision of the lens. Even if for the general assembly line, the processing process is also very complicated. The most expensive things to make by hand are labor and time.
The Advantages of Aspheric Lenses
From the above, you have learned some basic information about aspheric lenses. In this section, we will show you some advantages of the aspherical lens. Apart from the style of aspheric lenses, most people choose them because the following reasons:
- Improved performance
- Spherical aberration correction
- Slimmer and thinner profile
- More frame options
- Improved image quality
- Sleeker profile
- Lightweight and comfortable
- More natural appearance
- Improved peripheral vision
- Multiple lens designs to choose from
So, aspheric lenses come at a lot of advantages. However, everything has two sides. Hence, there are some negative voices of aspherical lens. Therefore, in the following section, we will show you the disadvantages of the aspheric lenses.
What Is Blue Light Glasses?
Blue light glasses are designed to absorb excess blue light from the many kinds of digital screens in our home and the office spaces. Blue light glasses is becoming more and more popular because it can protect the eyes from the invisible but harmful blue light projected by digital screens. With them, you can enjoy a life with less eye strain and a healthier sleep cycle.
With so many advantages, you may ask whether I can wear blue light glasses all the time. The following part shows some information.
Tortoiseshell glasses have many benefits.
Tortoiseshell glasses are made from the only sea turtle on the earth that can digest the glass material, and its sea turtle is the country's most precious wildlife, which is of great value. Wearing tortoiseshell glasses will not easily slip off even if you sweat and will not produce allergic symptoms. Tortoiseshell is so strong that it will not break even when the frames are bent to 45 degrees and will not be deformed throughout the year. In addition, the stability of the tortoiseshell is good.
How to buy prescription glasses online?
Go to the ophthalmology department of a regular hospital first, because you need to take a photo of your optometry sheet to the seller when buying glasses online. Accurate optometry is the first step in choosing the right glasses. After getting the prescription, we can choose the frames online. Various material frames have different properties. Some are light and some are tough. In short, each has its own characteristics. I can't say which one is better. According to your own needs and face shape, choose the suitable glasses frame. Next, choose lenses. There are mainly two types, spherical lens, and aspherical lens. The aspheric lens is better. Also, confirm what specific functions are needed, such as radiation protection, UV protection, etc. Finally, the seller will look at the data on the prescription. If your eyes have high astigmatism, you need to add money. Then take the payment and wait for your new glasses. It’s unbelievable that you can buy glasses online in just a few minutes. Buying eyeglasses online is fast and convenient.