What Are Varifocal Glasses?
Varifocal glasses, also known as varifocals, varifocal lenses, or progressive lenses, have a gradual change in strength from the top of the lens to the bottom with multiple focal points in between. Unlike bifocals, varifocals glasses have no specific area of lens strength, but progressive lens zones.
As mentioned above, varifocal glasses have three different prescriptions in one pair of glasses, allowing you to correct near and far vision. So, they bring you great convenience since you don’t need to change the glasses frequently.
However, there are also some common problems with varifocal glasses and we will show you the disadvantages of varifocal glasses.
So, in the following section, we will show you the disadvantages of varifocal glasses.
The Disadvantages of Polycarbonate Lens
In this section, we will show you the disadvantages of polycarbonate glasses.
First, the polycarbonate lens is expensive than other regular lenses. It can cost up to double the price of regular eyeglasses.
Second, compared with high-index lenses, polycarbonate glasses have a lower abbe value, which is used to measure the dispersion of light for different eyeglasses lens materials. Polycarbonate lens rates lower mean they have the potential to cause slight chromatic aberrations in your peripheral vision.
Third, compared with Trivex lens, polycarbonate lens has bad durability since they are thinner and lighter.
Artisan Optics
The glasses selection provides a different frame shape, size, and color. Their lens selection provides the most progressive technology for better vision. In terms of comfort, the glasses are wonderfully constructed, made of quality materials, and the weight of the frames is greatly balanced. Choosing the right color will increase some versatility and style in your wardrobe. The combination of acetate and metal provides the appearance of acetate frames with the lighter weight of metal frames for comfort. Artisan Optics does not provide poor quality, lackluster glasses, but high-quality glasses that customers like to wear.
Try on glasses before you buy them.
The arms of the glasses, which run along the sides of the head and eventually hold the glasses in place with the ears. The style of temples is multifarious like glasses frames. Again, just choose what you like. Be sure the radian is the normal size. The bend should not be too short or too long.
When do you need prism glasses?
If you experience symptoms of headache, dizziness, and nausea, then these symptoms may be caused by a subtle disorder between the eyes. This situation is called Binocular Vision Dysfunction(BVD). Double vision occurs in the situation that light enters the eye at the wrong angle and sends two different images to the brain. Some people have diplopia, where they can see only one image, and flat images are often blurry. Prism glasses can help to change visual deformities. Prism lenses can be helpful to prevent myopia and farsightedness in both eyes. If vision deteriorates in one eye, the eye muscle can use an external corrective prism to prevent blindness. Standard glasses are made of a combination of prisms that can correct the focal length errors and corneal curvature. The prism moves the image up and down or left and right to form an overall view.
Glasses are tools for correcting vision.
The basic function of optical glasses is to correct vision. Accurate correction of vision is an effective tool to control the further increase in degrees. If the difference of binocular degrees is great, correct vision can not only improve stereo vision but reduce the burden of a single eye. They help correct myopia, farsightedness, astigmatism, improve visual function, to see more clearly. Let you get a clearer vision and visual experience.
The classification is different.
Acetate frames can be divided into two kinds, one of which is the lens using acetate fiber processing of plate cutting. The other is the injection frame. It uses acetate fiber particles. Acrylic acid is a kind of unsaturated organic acid, which can be derived from a series of compounds to form a large class of acrylic products. Acrylic acid downstream products contain common acrylate and special acrylate. It has the characteristics of heat resistance, weather resistance, aging resistance, strong adhesion, water resistance, acid and alkali resistance, stickiness resistance, and environmental friendliness.
