Are Photochromic Lenses Good For Driving?

How to buy prescription glasses online

Consumers should choose different styles of frames according to their age and professional characteristics. Because everyone has different face shapes, different interpupillary distances, and different diopters, the size of the frames should vary from person to person.

Lenses are divided into glass lens, resin lens, and PC lens, and you can choose according to your preferences. The glass lens has a stable refractive index, good abrasion resistance, and stable optical performance, but it is relatively heavy and easy to break. Resin lens with high light transmittance is light, safe, and not easy to break, but the surface is easy to wear. PC lens has a high refractive index, but the surface is easy to wear.

Should I wear blue light glasses when using electronic products?

However, it's not just at work that we need to consider wearing blue light glasses. We can still use blue-ray blocking glasses when we're reading a book on a tablet, watching hot new shows on Netflix, or playing games with friends. It is suggested that when you are in front of a digital device, you should wear blue light glasses to help your eyes.

The Advantages of Polycarbonate Glasses

In fact, polycarbonate glasses come with several benefits and this section will show some of them.

First, polycarbonate glasses are safe and are virtually unbreakable. A study found that polycarbonate glasses were more impact-resistance than glasses or other types of plastic lenses.

Second, polycarbonate glasses are thinner than other types of lenses. This feature makes them ideal for people who have strong prescriptions. Lighter and thinner eyeglasses are less likely to slip off your nose and are more comfortable for everyday wear.

Third, extended exposure to UV radiation from the sun can cause damage to your eyes and lead to some eye conditions such as cataracts or macular degeneration. Of course, polycarbonate glasses can block out harmful UV rays from the sun and provide good protection for your eyes.

However, there are some negative voices of polycarbonate lenses.

The Acetate Spectacle Frame

The sheet spectacle frame is made of a high-tech plastic memory sheet. The current sheet material is mostly acetate fiber, and a few high-end frames are propionate fiber. The acetate fiberboard is divided into injection molding type and pressing and polishing type. The injection molding type is made by pouring in a mold. The plate frame is also suitable for people with a high number of heights because the frame is larger and can withstand a high number of lenses.

What Is Blue Light Glasses?

Blue light glasses are designed to absorb excess blue light from the many kinds of digital screens in our home and the office spaces. Blue light glasses is becoming more and more popular because it can protect the eyes from the invisible but harmful blue light projected by digital screens. With them, you can enjoy a life with less eye strain and a healthier sleep cycle.

With so many advantages, you may ask whether I can wear blue light glasses all the time. The following part shows some information.

Which Reading Glasses Are Most Suitable for Me?

If you have never previously required prescription glasses to improve your vision such as nearsightedness or farsightedness or astigmatism, it is highly like that you can correct your vision with non-prescription reading glasses.

People around the age of 40 to will benefit from the low power reading glasses because of the progressive nature of presbyopia. In other words, you do not need prescription glasses to correct your vision.

However, if you are around the age of 60 or older, the strength of the reading glasses will increase. However, you do not need prescription glasses.

5 Signs You Need Reading Glasses

In this section, we will list some signs you need reading glasses.

1. You are over 40 years old. Everyone’s eyesight changes at a different rate, but most people develop presbyopia in their 40s. Presbyopia is a condition in which the eye strain to focus on nearby objects, which is different from farsightedness, a condition in which you can see distant objects clearly, but objects nearby may be blurry. Farsightedness is usually present at birth, but presbyopia develops during the aging process.
2. If you find that you never seem to have enough light when reading, regardless of the room type or the number of lamps you have turned on, it may be time to get reading glasses. According to a study, a 60-year-old people requires three times as much light as a 20-year old to do the same task.
3. If your eyes get tired when reading or working at your computer, you may need reading glasses. Do you find yourself dozing off at your computer, or do your eyelids get heavy when your reading or do detailed work? If so, you may be developing presbyopia, and you may need the reading glasses.
4. Another sign you need reading glasses is that you are getting more headaches. Consistently straining your eyes to read or focus on craft could give more headaches. A headache right behind your eyes could be indicative of hyperopia. It is important to remember the 20-20-20 rule: every 20 minutes, look at something at least 20 feet away for 20 seconds. If your headaches persist, you should see an eye doctor and have a check.
5. If you see halos, you may need reading glasses. When your lens cannot focus light into your retina, it makes your vision appear blurry. Thus, reading glasses can solve this problem.

Do I need reading glasses? After reading this post, you may have a basic understanding. If you need a pair of reading glasses, try Koalaeye glasses. They are stylish and cheap, and the glasses will be mailed to you with great convenience.