Study On the Night Driving Glasses
Researchers at Harvard's Schepens Eye Research Institute recently conducted a study to find out if wearing night driving glasses while driving at night is good for vision. All 22 participants drove under four conditions that simulated night driving, wearing either yellow night driving glasses or glasses with clear lenses. Each participant drove with or without the headlight glare simulator activated to simulate the effect of oncoming traffic. The study found that wearing glasses while driving at night didn't seem to improve: how well the participants were able to recognize pedestrians at night and negative effects of headlight glare on pedestrian detection. Our data suggest that wearing yellow lenses while driving at night does not improve performance at the most critical task: pedestrian detection, the study's authors said. A small 2019 study showed that night driving glasses can actually slow down visual reflection by a fraction of a second, making night vision worse.
The Pros of Progressive Lenses
In this section, we will show you the benefits of progressive lenses.
One of the major advantages of progressive lenses is that the design of progressive lenses blends the prescription. There is no image jump or visible line on the lens. This enhances your comfort with your lenses and can be safer when performing tasks such as driving.
With progressive lenses, you don’t have to switch other glasses frequently. Progressive lenses correct distance, intermediate, and reading vision within one lens. So, it can bring you great convenience.
What is cellulose acetate?
Cellulose acetate refers to a thermoplastic resin obtained by esterification with acetic acid as a solvent and acetic anhydride as an acetylating agent under the action of a catalyst. It is the first commercially produced and continuously developed fiber among cellulose derivatives. Vegetarian organic acid esters.
How to Choose Glasses for Face Shape?
How to choose glasses to suit my face? For the oval face shape, the walnut-shaped frames that are not too deep or narrow are a very good choice. For heart-shaped faces, the light-colored frames and rimless frames that have a light, airy appearance also are good choices. For oblong face shape, the frames with decorative or contrasting temples would be a good choice.
For square face shape, narrow frame styles are recommended. For diamond face shape, rimless spectacles and frames with oval or cat-eye shapes can be good choices. For round face shape, frames with a clear bridge and rectangular frames that are wider than they are deep would be good choices. For base-down triangle shapes, the frames with cat-eye shapes are recommended.
When selecting the eyeglasses shapes, you also need to consider other factors, such as hairstyle, eye color, and so on.
In addition, to choose eyeglasses, you can try Koalaeye Optical, which provides all kinds of glasses frames, eyeglasses, and sunglasses.
Sales points of note for color changing lens
The discoloration rate of the lens is related to the intensity of ultraviolet light. The stronger the ultraviolet light is, the faster the discoloration rate will be, while the vice versa. The degree of discoloration is related to the ambient temperature. The higher the temperature is, the color of the lens is slightly lighter. Otherwise, the color is slightly darker. With the progress of manufacturing technology, the discoloration rate, especially the fading rate of the discoloration lens has been greatly improved, and the interference of temperature on the color depth is becoming less and less. Either glass or resin lenses react only with ultraviolet light, not visible light, so in some environments, they do not darken.
About Plastic Frames
It is usually divided into thermoplastic plastics and thermosetting plastics. Thermoplastics can be reworked under heat. Thermosetting plastics cannot. The plastic frame is usually made of nylon or composite material. Although it is a thermoplastic material, at regular temperature will not become soft. The plastics used to make frames are not always thermoplastic, but they can almost always be softened by heating. Thermosetting plastics are usually used only for small parts.
Prepare a few pairs of glasses
Many people now have a 'reserve' of glasses. For example, you can choose two pairs of glasses. One pair is for daily use, and the style should be relatively simple and traditional. The other pair is for use at gatherings or weekends and can be as cool as you want. The more conservative style is a thin and bright metal frame that matches the shape of your face. For the other pair, you can choose a flat plastic frame or a shiny polished metal frame with a unique shape.