What Are Transition Lenses?
Transition lenses, also called photochromic glasses are eyeglasses lenses that change their colors with light. The transition lenses darken in the sunlight and lighten in the softer light or the dark. These transition lenses provide the convenience of sunglasses without having to wear them over your prescription glasses and having to constantly switch between the two.
But there are some common transition lenses problems. So, we will list some of them. Are transition lenses worth it? After reading this post, you will find them.
What Do Progressive Glasses Mean?
Progressive lenses, also called PALs, are the most popular multifocal lenses today. They offer an effective and great-looking vision solution for individuals with presbyopia. The main benefit of progressive lenses is that they do not have a visible line bisecting the lens, but rather a seamless and gradual change in power as you move down the lens.
Rather than two or three distinct zones, progressive lenses offer a smooth transition of focal powers that covers the total range of clear vision from close to far and every point in between.
What Glasses Lens Thickness Should I Choose?
In this section, we will show you how to choose glasses lens thickness. Lens thickness will depend on the strength of your prescription, your pupillary distance, the size of the frame and the lens material. Usually, high prescription glasses are thick.
If you have moderate nearsightedness, you should choose thinner lenses at the edge thickness of your lenses will be more visible. If your sphere prescription is between -2.50 and -4.00, the lenses with a refractive index of 1.6 would be an ideal choice. A lens with a refractive index of 1.67 is suitable for sphere prescription between -4.00 and -6.00, and any prescription over that a lens with a refractive index of 1.74 will be more suitable.
So, when you purchase prescription glasses, consider the glasses’ lens thickness also. If you want to get a pair of prescription glasses online, Koalaeye Optical is recommended. It is an online optical store and provides all kinds of eyeglasses, sunglasses and frames. Besides, these glasses are stylish and cheap. If you purchased, the glasses will be mailed to you with great convenience.
Eyeglass direct
Eyeglass direct makes high-quality prescription glasses at the lowest possible price. Twenty years of experience gives you the know-how to deliver services at the lowest cost. All glasses are made with high-quality frames and high-quality lenses, using the most progressive, computerized optical processing equipment. That helps lower labor costs, passing on savings to consumers.The flexible titanium eyewear range at Eyeglass direct gives you the best quality eyewear at an affordable price.
Disadvantages of glasses
They can distort vision, especially at the edges of lenses if you have strong prescriptions or astigmatism. Some people have trouble adjusting to progressive lenses. These lenses fog up and splash in the rain. Due to the limitation of the frame itself and the effect of the prism effect in the peripheral part of the glasses, the wearer can see a relatively narrow field of vision.
Anti-fouling Coating
The lens coated with anti-reflection film is pretty prone to stain, and the stain will affect the transmittance of the lens. Microscopically, the anti-reflection film shows a porous structure, therefore, the oil is very easy to soak in it. The solution is to coat a layer of anti-fouling film with anti-oil performance on anti-reflection film. The film is very thin and will not change the optical performance of the anti-fouling film. The material is mainly fluoride. There are two processes, one is the immersion method, one is the vacuum coating method (the most commonly used).
Gunnar Intercept blue light blocking glasses
The company is committed to improving people's visual experience when watching digital devices like computers, laptops, smartphones, pads, etc so that the wearers will no longer be affected by harmful light like short-wave blue light and glare refracting from these digital screens. They are continuously pursuing better protection of human eyes. Gunnar Intercept anti-blue light glasses filter or block harmful blue light from screens like computers. They relax eye muscles, soothe eye fatigue, prevent eye dryness, maintain constant moisture, and increase visual clarity.
