What does the Drop Ball Test have to do with the eyewear industry?
FDA mandates that eyewear products must ensure their safety. Impact resistance is a basic norm for binding glasses and/or lenses in the United States. The FDA does say that a drop ball test must be performed on every glass lens for prescription use. The FDA-regulated eyewear products are common in the everyday lives of the public, and the FDA considers impact-resistant lenses to be an important part of the safe design of these devices. Today, safety lenses are rarely mentioned in our sales, but in the 1990s, when resin lenses first entered the Chinese market and glass lenses still dominated the market, safety lenses were a pretty important concept. At the time, the hardening technology has not been upgraded, and the resin lens is easy to wear out than the glass lens. The eyewear industry is relying on lightness, safety (anti-impact), comfort (anti-ultraviolet) step by step to achieve the market share of resin lenses from 1% to 100%.
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.
Types of aspheric lenses
There are two types of aspheric lenses: single aspheric surface (single aspheric surface for short, different from the outer aspheric surface and inner aspheric surface) and double aspheric surface (double aspheric surface for short). For the outer aspheric surface, convex is an aspheric surface and concave is a spherical surface. For the inner aspheric surface, a convex surface is a sphere, and a concave surface is an aspheric surface. In addition to correcting aberrations, the double aspheric lens also improves the effective field of vision compared to the single aspheric surface. When people's eyes look through the edge of the lens to see things, like driving when looking at the reflective mirror, it often affects vision because of the large aberration at the edge of the lens. Previous designs of aspheric plates have analyzed a single ray of light passing through the center of the pupil. Wavefront technology controls the entire beam of light passing through the pupil, eliminating high-order aberrations.
It is more reasonable to use a visor
According to experts, if using the sun visor above the seat can solve the problem of dazzling sunlight, it is generally not recommended to use sunglasses. Although high-quality sunglasses can effectively reduce the impact of light on human eyes, they will more or less affect vision. Driving as a high-risk behavior, misjudgment of the environment can easily lead to accidents. If you really want to use sunglasses while driving, it is recommended that you develop a habit of wearing sunglasses to walk or work during your daily. Also, you can choose dedicated driving sunglasses. What needs to be reminded is that if your sunglasses are not usually worn, don't use them alone in the car.
Optix 55 day/night driving glasses
These glasses are designed to provide anti-glare and UV protection. They have a flexible plastic lens and frame that can be used over prescription glasses. They use polarized lenses to make the image look sharper. They help reduce glare, reflection, and its negative effects while improving and brightening the visual area.
Lions Club
Lions Club is a service organization with over 1 million members worldwide. Known for the work to improve the lives of the visually impaired and prevent avoidable blindness, they are proud to serve their ongoing efforts by providing unique and influential programs and grants. One of their missions, Lions Recycle for Sight, helps those who desperately need eye care and glasses that they either can't afford or don't have access to. The Lions Club accepts donated prescription glasses, sunglasses, and card readers, but only sunglasses and card readers can be distributed in the U.S. All other donations go to help individuals in developing countries.
Can you repair rimless glasses by yourself?
Splice the broken temple of the glasses into its original position on the glasses. Cut a piece of tape about 10cm long and pass it through the gap between the temple of the glasses and the base of the spring. Place the tape on the inside side of the glasses and tighten the other side with your hands. Then apply the outer tape to the temple of the glasses and press it down with your hand. Cut a piece of tape about twice the circumference of the bottom of the temple of the eyeglasses and stick it around the bottom of the temple of the eyeglasses. Cut a piece of tape about twice the circumference of the upper-middle part of the temple and use it to stick the top of the tape used in the first step. Then a piece of tape roughly twice the circumference of the middle leg of the glasses was used to tape the area between the two steps. Then repeat the previous step, and introduce another layer of tape from the gap on the outside of the adhesive tape. First, cut off a piece of tape as long as the temple of the glasses and stick the end of it to the bottom of the temple at an angle of about 60 degrees. Then tighten the other end with your hand, making it stick upward in a spiral until it covers all the tape in front.
