Benefits of Progressive Lenses
Progressive lenses are different from traditional reading glasses and bifocal glasses in that bifocal reading glasses have to constantly change the focal length, causing fatigue. And there is no clear dividing line between the two focal lengths. They are more comfortable, more beautiful. When you see far or see near, a pair of glasses can be done, so they become the best choice for old people little by little.
Progressive lenses allow multiple fields of view to be merged into a single lens with no discernible difference between the fields themselves. Degrees of the lens vary gradually from far to medium to your full reading. This is why progressive lenses are often regarded as no-line bifocals or trifocal points.
Difference Between Driving Glasses And Night Vision Goggles
The special effect of polarized glasses is to eliminate and filter the scattered light in the beam of light effectively so that the light can be put into the visual image of glasses with the right track, and the field of vision is clear and natural. The effect of night vision goggles is that they allow the wearer to observe the surroundings at night without being affected by light. For example, aviation accidents can be greatly reduced through the use of navigation winches equipped with forward-looking infrared cameras on aircraft and by requiring pilots to wear goggles fitted with night vision goggles.
Choose the right clear sunglasses for your face shape.
A clear eyeglass frame suits the person of different face shapes according to different shapes. For example, a heart-shaped face suits the clearest eyeglass frame, and a square face suits an elliptical transparent eyeglass frame. A round face suits the clear eyeglass frame with an outline. The long face suits the clear eyeglass frame with some width and so on. There are many kinds of clear frames, like oval, round, square frames, and so on.
When choosing clear frames, be careful to choose one that fits the shape of your face. Oval and the round clear frame are more suitable for heart-shaped faces, square faces, and long faces. People with round faces should avoid large frames, dark frames, and wide edges, and don't wear round or square frames.
What Are Polycarbonate Glasses?
Polycarbonate was developed in the 1970s for aerospace applications and is currently used for the helmet visors of astronauts and for space shuttle windscreens.
Polycarbonate lenses were introduced in the early 1980s in response to a demand for lightweight, impact-resistance lenses. Since then, polycarbonate glasses have become standard for safety glasses, sports goggles and children’s eyewear.
Polycarbonate glasses are thinner and lighter than regular plastic lenses. They also provide 100 percent UV protection and are up to 10 times more impact-resistance than plastic or glasses lenses.
In addition, Polycarbonate lens provides clearer and more comfortable vision if anti-reflective coating is applied to the lenses, which can eliminate distracting lens reflections that interfere with vision, particularly when driving at night or in other low-light conditions when glare sources are present.
After learning some basic information about polycarbonate glasses, we will show you the advantages and disadvantages of polycarbonate lens.
Wear glasses normally after being fitted with glasses
If you have myopia and have been diagnosed as true myopia at the same time, and the degree is above 0 degrees, you should wear suitable myopia glasses for correction. Once equipped with glasses, you should wear them except for washing your face and sleeping, because myopia patients are in a state of emmetropia after wearing suitable glasses, and the natural relationship between adjustment and convergence is restored. Wearing glasses is not only to improve eyesight, but also to read and work within an appropriate distance, so that there is a normal coordination relationship between the adjustment of the eyes and the convergence function, and to avoid eye fatigue.
What are progressive lenses?
Progressive lenses, also called progressive multifocal lenses, are lenses that have multiple focal points. If it is divided from the focal point, the lenses can be divided into single focal lenses, bifocal lenses, and multifocal lenses. The original intention of progressive multifocal lenses is to provide natural, convenient, and comfortable correction methods for presbyopia patients. A pair of glasses can see far away, close up, and mid-range objects. After wearing them, one pair of glasses is equivalent to using multiple glasses. Because of the different nature, characteristics and applicability, progressive lenses are more expensive than single vision lenses.
Can I order progressive glasses online?
Glasses belong to the half medical and half business industry, in addition to the price of glasses, frame style, lens quality, there is more need in professional glasses services. The quality will be very different. The refractive index, film layer, light transmittance, and anti-oil resistance of the lenses almost invisible to the naked eye will be very different, so the prices of different brands of glasses are not comparable. There are many considerations when buying progressive glasses online. If the lens is too far away from the eye, people with myopia may not be able to see clearly, and people with hyperopia may have too much diopter. If the distance is too close, the opposite is true. In addition to the accuracy of optometric data, we need to pay attention to the importance of frame to maximize the benefits of the progressive lens.
