How to Remove Coating from Plastic Glasses?
To remove coating from plastic glasses, you need to prepare some things which are etching cream, cotton buds or a small brush, rubber gloves, protective glasses and microfiber cloth.
Now, we will show you how to remove coating from glasses.
- With a cotton swab, scoop a little bit of etching cream. Carefully apply it to the whole surface of the lens. (both front and back).
- Let it sit for 5 minutes.
- With another cotton swab, do a little scrubbing around the surface of the lens. (both front and back).
- Wash thoroughly with soap and water.
Then repeat the processes if there is any coating left. After all steps are finished, you can successfully remove coating from plastic glasses.
How are we nearsighted?
The light from external objects to the eye needs to be refracted by the lens before it can be imaged on the retina. The refractive power of the lens depends on the contraction and relaxation of the ciliary muscle. When we look at close objects, the ciliary muscles contract and the lens becomes thicker. When we look at distant objects, the ciliary muscles relax and the lens becomes thinner. Adjust the focal length of near and far objects so that they will show a clear image on the retina. If you use your eyes too often and the longer the ciliary muscles work continuously, the ciliary muscles will spasm because of too much tension. At this time, the lens cannot be adjusted and thinned. After the light from a distant object is refracted by the lens, the imaging position will fall in front of the retina instead of on the retina. Only a blurred image can be seen, which becomes myopia.
There is another situation. For some people, due to genetic factors, in the process of growth and development, the front and rear wheelbase of the eyeball will gradually become longer. In this way, although the adjustment function of the ciliary muscle and the lens is normal, the image formed will also fall in front of the retina due to the longer the axis distance of the eyeball, which can also cause myopia.
The two causes of myopia are different. Myopia caused by ciliary muscle spasm is called 'pseudo-myopia'. As long as the ciliary muscles are relaxed, myopia can be reversed. Myopia caused by the extension of the wheelbase of the front and back of the eyeball is called 'true myopia', which cannot be reversed and can only be corrected by myopia glasses.
Quality and price have benefits
EyeglassesDepot.com is unbeatable in quality and price.There are two on-site LABS that provide low prices.In reality, other repair sites you may have visited may have used our facilities to repair customers' frames.The cost of repair is ensured to be minimal.
A service is also a form of discount.
The eyewear industry itself is a service industry, and good service can increase sales. If they sell inferior glasses and gifts, they are destroying the brand. Optometry itself belongs to the service, when people are choosing glasses, they must include this kind of service. Consumers are willing to come to optical stores in order to get better service. Therefore, reception, recommendation, testing, and other services should be done. Such as door-to-door delivery, door-to-door product experience, introduction and recommendation, free maintenance and repair, add good value-added services, which is more likely to make consumers buy. This is also a form of promotional activity.
What Are Pinhole Glasses?
Pinhole glasses, also called stenopeic glasses, are plastic eyewear with hundreds of pinhole-sized perforations in place of lenses. Pinhole glasses are mostly used to improve refractive errors in the eye because they shield the eye from indirect rays of light which can distort vision. This would decrease the blur circle on the back of the retina.
Sunglasses For Fishing - Polaroid
Polaroid, founded in the United States, is the inventor of the world's first polarized glasses. Polaroid is the maker and leader of polarized lenses. ?Polaroid lenses are widely used in fishing, driving, labor insurance, medical, aircraft pilot, and scientific research. ?It enjoys a high reputation in the market and is loved and respected by countless consumers. Its industry covers more than 0 countries and regions in the world, and many big stars are her loyal fans.
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.