How to Know If You Need Bifocal Glasses?
As you get older, you will find that is more and more difficult to read or focus on things that are really close up. This is called presbyopia and it is a common eye condition among older people.
How to know if you need bifocal glasses? If you find yourself squinting at the text that once was easy to read or your vision is blurry, you may need to see an eye doctor. In this situation, you may need bifocal glasses to correct your eyes.
If you currently wear glasses but see print more clearly when you remove them, it is a sign that you may need bifocal glasses in the future.
To know if you need bifocal glasses exactly, check your eyes by an optometrist or ophthalmologist.
Where to buy clear eyeglasses?
When shopping for new clear eyeglasses, you can easily feel overwhelmed by the endless racks of styles and brands. The way to access value is to buy from a store that offers great advice, where you’ll be told whether more expensive frames warrant their higher prices or that you’d do just as well with a lesser-known brand. Koalaeye Optical offers “Wear in Comfort, Look in style” eyeglasses and sunglasses. If you buy glasses online from us, you will get a huge variety of frame styles and colors. And the prices are highly affordable so they won’t burn a hole in your pocket.
What Are Polycarbonate Glasses?
Polycarbonate was developed in the 1970s for aerospace applications and is currently used for the helmet visors of astronauts and for space shuttle windscreens.
Polycarbonate lenses were introduced in the early 1980s in response to a demand for lightweight, impact-resistance lenses. Since then, polycarbonate glasses have become standard for safety glasses, sports goggles and children’s eyewear.
Polycarbonate glasses are thinner and lighter than regular plastic lenses. They also provide 100 percent UV protection and are up to 10 times more impact-resistance than plastic or glasses lenses.
In addition, Polycarbonate lens provides clearer and more comfortable vision if anti-reflective coating is applied to the lenses, which can eliminate distracting lens reflections that interfere with vision, particularly when driving at night or in other low-light conditions when glare sources are present.
After learning some basic information about polycarbonate glasses, we will show you the advantages and disadvantages of polycarbonate lens.
Two Tone Cat Eye Glasses
Cat eye glasses, the statement frame is the perfect finishing touch to elevate any outfit and playful cat-eye creates a fun, polish look. The two tone cat eye glasses with silver and black finishes. The style often uses the same principles as Browlines, featuring a darker color on top, blending into a lighter silver color towards the bottom.
How to know if lens is polarized?
Make use of LCD screens. Point the glasses horizontally at the LCD screen and then rotate them upward by 45 degrees clockwise. If it is a polarized lens, it will show a change in color deepening. If it does not change no matter how you rotate it, it is not a polarized lens. You can borrow another person's polarized lens or have previously worn a known true polarizer, and place it crossover with the new glasses you want to buy. At this time, you should see the object clearly from the crossover part with your eyes. Then cross the glasses vertically and horizontally, and at this point, the opposite object should not be visible from the intersection. If this condition is satisfied, it means that a true polarized lens is being tested.
Different Types of Progressive Lenses
The short corridor progressive lenses that are designed to fit into small frames. They trade practically for a more fashionable look. Some people have difficulty transitioning to short corridor progressive because of the lens size and vision can feel more distorted sometimes because of this.
Transition progressive lenses are the last type. They are a brand of photochromic lenses. These lenses darken when exposed to UV light to provide shade for your eyes. They operate as a useful alternative to sunglasses.
5 Unbreakable Eyeglasses Frames
In this section, we will list the most durable eyeglasses frames and we will introduce them one by one.
Titanium: One of the most durable eyeglasses frames is the titanium eyeglasses frames. It is lightweight, strong, and flexible. So, titanium eyeglasses frames have lots of fans in the eyeglasses market. In addition, pure titanium is hypoallergenic. But, due to these features, titanium eyeglasses frames are expensive than other frames.
Stainless steel: Stainless steel frames have some spring in them, which resists breakage. Stainless steel also resists corrosion, giving it a longer life. However, stainless steel eyeglasses frames may be hypoallergenic, depending on the alloys used.
Nylon: many people like athletes like nylon frames because they are flexible, lightweight and unbreakable - at least in the short run. However, nylon frames may become brittle over time, which is something to think about.
Kevlar: kevlar eyeglasses frames used in bulletproof vests can survive strong impacts, making them a good choice for contact sports and high-risk jobs. It does not have a lot of flex, limiting its applications.
Flexon: besides the above unbreakable eyeglasses frame, we will introduce another brand-name metal - Flexon. Flexon has a unique capability for springing back to its original shape after it gets twisted and they are called memory metal.
