Which is better polycarbonate or plastic lenses?
Wed, Apr 06, 22 By : Koalaeye
Jones New York J516 Glasses combine function and fashion. They are perfect for modern professionals, and the full-rim glasses are made of strong and not heavy acetate. The keyhole bridge gives off a preppy feel, proper for people with wider noses. Spring hinges maintain their original balance and adjustment to make your glasses more durable and comfortable, and bimetal rivets at the edges and increase the appearance. They are modern, mature college-style glasses. How to protect your contact lenses? When...

Jones New York J516

Glasses combine function and fashion. They are perfect for modern professionals, and the full-rim glasses are made of strong and not heavy acetate. The keyhole bridge gives off a preppy feel, proper for people with wider noses. Spring hinges maintain their original balance and adjustment to make your glasses more durable and comfortable, and bimetal rivets at the edges and increase the appearance. They are modern, mature college-style glasses.


How to protect your contact lenses?

When wearing contact lenses, do not drop any eye drops, and only use a special moistening solution for contact lenses. In daily life, we recommend that dry eyes can be relieved with lubricating fluid, but we do not advocate frequent use of lubricating fluid, so as not to make the eyes become dependent on lubricating fluid. The right way is to do blink training. The ingredients contained in the eye drops will remain in the lenses, which will cause certain damage to the eyes and pollute the lenses. Some eye drops can make the lenses tinted after use, which will affect the transmittance and a refractive number of the lenses and make the vision blurred. Ladies who need to make up should wear contact lenses before making up. When removing makeup, remove contact lenses before removing makeup, to avoid the makeup sticking to the lens and damaging the lens and eyes. Lenses should not be lent to others to avoid cross-infection of eye diseases. You can't wear contact lenses while swimming or bathing.



How to Test Computer Glasses (Clear Glasses)

First, we will show you how to test computer glasses with clear glasses.

1. Ask for Blue Light Glasses Brand Spectrum Report

To find out whether your blue light glasses are the best computer glasses, you should contact the company you bought them from and ask for a spectrum report. It will show you how much blue light your computer glasses can block.

After sending the spectrum report to you, you should make sure that your computer glasses are able to filter at least 30% blue light, otherwise, they are unsafe.

2. Use the Lens Reflection Test

As for how to test computer glasses, you can use the lens reflection test. You can see what color the light is that reflecting off the lenses.

If it reflects the blue light, they are filtering some blue light. If the reflection is violent or purple, the computer glasses may be not effective.

This is a good way for you to perform a blue light test at home.


Can I get a prescription for contact lenses?

Once a contact lens prescription is established, you are entitled to a copy. In some cases, this may occur after a diagnostic match. In many typical GP lenses and special designs, such as bifocal, annular, keratoconus, or postoperative, it may take several examinations before a successful match can be made and a prescription can be provided. If contact lenses are not issued by a doctor, it is important that whoever dispenses them is completely accurate. A soft lens Rx usually includes lens material name, design, power, base curve, and diameter. GP lens prescriptions usually have this information and more, like perimeter curve radius, center thickness, special perimeter design, and optical area diameter.



Titanium frame machining is complicated.

The elastic modulus of titanium alloy is small, which is easy to produce large deformation, springback, distortion, and vibration in cutting, resulting in poor geometric shape and accuracy of the workpiece. As the surface roughness increases, the tool wear increases. The thermal conductivity of titanium alloy is poor and its thermal conductivity is small, 1/6 of that of 45 steel, so the high heat generated in processing cannot be effectively diffused. It is even harder to use titanium to make glasses. The frames are very thin and a lot of fine work is demanded. It's definitely a challenge for titanium, which is pretty difficult to work with. In addition, titanium alloy frames involve titanium alloy welding technology, which is more difficult.


Don’t Do When Cleaning Glasses

Here are something you can’t do when cleaning the glasses.

1. Don’t use your shirttail, blouse, or other clothing to clean your glasses, especially when the lenses are dry because they will scratch your lenses.
2. Don’t use the saliva to wet your lenses.
3. Don’t use some surface cleaners to clean your eyeglasses because they may damage glasses lenses and coatings.
4. Don’t use some paper to clean your lenses, such as paper towels, napkins, or some tissues. They may scratch or smear your lenses or make them full of lint.
5. Don’t try to remove a scratch on your lenses by buffing away. This action can make the situation worse.



Buy Glasses For Kids - Proper Lens

The size of the lens mainly determines the size of the eyeglasses. The outer edge of the rim of the lens should be on the outer edge of the orbital bone. If it is larger than the face, the rim of the lens frame will be too big. If the lens is only as big as the eye, the frame can easily deform. Resin and hard lenses should be considered first because glass lenses are fragile and easy to damage children's eyes. Resin lens mainly needs the accuracy of the axis of scattered light. The matched luminosity must be accurate. There are no scratches, no bubbles, and no impurities on the lenses. The degree of the lens selected for the child must conform to the quality testing standards promulgated by the state, and the error of the diopter should be within the range of the requirements of the national standard.

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