Why do spectacle frames rust?
Before solving this problem, we can first understand the causes of rust spots on the frames and skin allergies due to rust spots. Many alloy products in daily life contain nickel, and direct contact with the skin will cause allergies to sensitive people. The temples and nose pads are the parts that contact the skin with a large area, especially the outer surface of the metal frame and the interior of metal containing a large amount of nickel. Through contact with the skin and erosion of sweat, the appearance of rust spots and skin allergies are caused. Once allergy occurs, it will cause contact dermatitides such as redness, swelling, itching, and yellow water on the surrounding skin.
Will Non-Prescription Glasses Damage Your Vision?
Wearing non-prescription glasses has no negative effects on your vision. Wearing them is just like looking through a clear window. They even provide protection for your eyes. If your lifestyle or work requires you to be in front of computer screens for a long time, consider wearing non-prescription glasses with a blue light filter.
Transition Lenses Problems
Here, we will show you some common transition lenses problems.
Transition lenses are typically embedded with photo-sensitive chemicals or coated with similar films that produce the shading effect when exposed to light. This process makes the lens more expensive to manufacture and focuses on prescription glasses, thus raising the transition glasses cost. The transition lenses cost may be twice of the regular glasses lenses.
When you are driving with the transition glasses, they will fail to work. Car windshields typically come standard with anti-glare effects or films and laminates that break up some of the direct sunlight that enters the vehicle. This will reduce the transition lens effects, causing them to register a non-lit condition when the direct sunlight can actually be very bright.
Why should you take care of your rimless glasses?
Rimless glasses are not supported by the outside of the lens frame but are supported directly by the temples of the glasses.Because rimless glasses only rely on both sides of the temples directly with the lens joint, with less protection of the lenses ring. It is easy to cause lens wear, screw loose, so special attention should be paid to maintenance.
How to Get Used to Progressive Lenses?
It is common that your vision may change when you are over age 40. You can find it is happening when have to hold your favorite book, the daily newspaper, or a restaurant menu farther away just to read it. This is an eye condition called presbyopia. It is normal and almost all of us get it as we reach middle age.
This eye condition often can be corrected by progressive lenses which allow you to see objects from far to near clearly. With progressive lenses, you do not have to switch your glasses to see far or near objects frequently.
However, since progressive glasses have three different prescriptions in one lens, it may be difficult for some people to adapt to the new ones. So, in this post, we will show you how to get used to progressive lenses.
Does the phone screen have irregular color bars when wearing polarized lenses?
It is mainly the special properties of the polarizing film. The polarizer is able to see the internal stresses in the plastic, so when we usually look at the edge of the mobile phone screen, it will have a colored stripe or a black piece, which is mainly caused by the uneven edge pressure when the screen is installed. It's mostly a matter of light and shade. Wearing a polarized lens to see the LCD screen a tilt will find that the screen darkens, mainly because the polarizing lens can absorb light in a certain direction. The LCD screen is a one-way light (different from sunlight), so it is absorbed, so it is found to be dark.
Features of acetate frames
These are several powerful attributes of acetate frames, indicating that this material is very unique. The high-quality acetate frame is known for its lightweight, fastness, and thin structure.
- No harm to the environment.
- Made of renewable materials.
- Available in various colors.
- Can make exquisite designs.
- Can be adjusted by an optician.