What brand of lenses does Costco use?

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.

Eye problems that may occur while driving.

Visual fatigue and xerophthalmia: when driving, the spirit and eyes are in a highly tense state, reducing the blink of an eye, which will easily cause eye fatigue and xerophthalmia. Flash glare -- car headlights and city light pollution -- can cause serious damage to the eyes. UV damage: UV radiation is strong when driving in the daytime, especially in the plateau and snow weather. Nocturnal myopia: nocturnal light is insufficient, so it can make the eye pupil dilate, causing nocturnal vision to drop influence driving safety.

Recognize the identity

First of all, we should identify the logo of the pure titanium glasses frame. Usually, pure titanium glasses frame is on the supporting piece of the frame, and the inside of the temples is pure titanium.When online glasses need glasses retailers provide detailed pictures, to check if there is pure titanium.Usually, pure titanium frames are marked with 100% TITANIUM or PURE TITANIUM on the temples or lens.BetaTitanium stands are labeled BetaTitanium or β Titanium, which varies slightly from manufacturer to manufacturer.

Method of wearing the contact lens

Wash your hands before putting on contact lenses, and be careful not to leave long nails, to avoid contamination of the lens by bacteria and nail scratches. Place the contact lens on the tip of your index finger, face-up, and pull your upper and lower eyelids apart with the middle fingers of both hands. Look straight ahead and place the lens gently into the eye (attached to the cornea). Remove the index finger and look down so that the lens is attached to the cornea, and slowly relax the eyelids with the middle fingers of both hands. Blink gently several times (or roll your eyes) to remove bubbles.

How to repair rimless glasses?

First, insert the wire into a small hole in the glasses near the bridge. Pass it in and out near the bridge, then repeat the process on the other side near the temple. Once you have the thread locked, you can place the lens. Insert it into the frame and place the wire in the built-in groove. Tighten the wire so it holds the lens perfectly, then trim it to the left. Reinsert the lens into the rimless glasses. Do not try to force it back in. The best way is to cut the wires completely and replace them with new ones. Use the same process as replacing wires. To prevent glasses from popping out, tighten the wires regularly.

Ways to improve driving at night

1. Check your eyesight and glasses regularly to ensure that your eyesight and the glasses you wear are in the best condition.

2. Clean the stains on the glasses before driving. The stains on the glasses will aggravate the glare.

3. Clean the windshield before driving at night to eliminate the hidden danger of glare.

4. Replace the wiper regularly.

5. Keep your vehicle headlights clean and free of dirt.

6. Do not drive for a long time, eat more foods that are good for eye health, and perform proper eye care.

7. If you feel that your night vision is reduced, you should go to the hospital for help in time.

In fact, if your eyes are healthy and you have no vision problems that require prescription glasses to correct, then the best glasses for driving at night is to not wear glasses at all. On the other hand, if you need prescription glasses because of myopia, hyperopia, or astigmatism, choose clear corrective lenses with an anti-reflective (AR) coating. These lenses can let almost 100% of the visible light into your eyes, can allow your eyes to correctly focus on roads and other obstacles at night, can reduce or eliminate the glare from street lights and headlights. Because they are based on your personal prescription, they provide the best vision for your eyes.

Which sunglasses are best for driving, polarized sunglasses or non-polarized sunglasses?

Polarized and non-polarized sunglasses are the same in the ability to protect against ultraviolet rays. But when you work as a driver, in addition to the front of the sun, sometimes there are highway road reflective lights, other car body reflective lights, and so on. Glare will make people's eyes uncomfortable and fatigue, and affect the clarity of vision, stimulating the eyes. Polaroid lenses can filter out light from different angles, so when you driving, is best to wear polarized sunglasses.