What does plus and minus mean in eyesight? | KOALAEYE OPTICAL

What does plus and minus mean in eyesight?

What makes the lens thicker or thinner? Reading What does plus and minus mean in eyesight? 6 minutes Next Can you live a full life with glaucoma?

Tortoiseshell glasses are abundant in variety.

Tortoiseshell glasses frame is quite rich in color. Black, brown, light gold, and other colors are covered, with black spots scattered at random distribution. The overall color is dark. Regardless of men and women, it will add a noble and steady feeling to the wearer. For many people, today's tortoiseshell glasses wear, is not only for the pursuit of its own comfort. It is more as a kind of decoration, showing their extraordinary taste.


Semi-rimless glasse look more stylish.

Semi-rimless glasses are very stylish and more creative than rimmed glasses. Women looking for the perfect glasses will look more elegant and stylish in these glasses. The semi-rimless glasses are designed to make the wearer look the smartest. They are much better than rimmed glasses because they make you look more creative.



The best way to drive at night

Contrary to what night driving glasses manufacturers to want you to believe, the best way to enhance the night driving experience is to obtain clear anti-glare glasses. Unlike the potentially dangerous yellow tint, the anti-glare glasses are designed purely to keep your vision clear and glare-free in all night driving situations and even during the day.

You can find a pair suitable for the road in any optical shop! The best part of these glasses is that they don't have a thick wrap frame and have a gorgeous sun visor like most night driving glasses. You can modify and customize any style of glasses with anti-glare lenses, even your daily prescription glasses.


What Are Adjustable Glasses?

Are you over age 40 and unhappy with your current glasses for the presbyopia correction? Most people with nearsightedness, farsightedness, or astigmatism need progressive lenses to see objects clearly. But some are frustrated by the relatively limited field of view these and other multifocal lenses provide for intermediate and near vision.

And, those people with presbyopia also have problems. They often are frustrated by forgetting to bring their reading glasses or are constantly needing to put them on and take them off to see clearly at a different distance.

If you also have the same trouble, here is some good news. You can use multifocal eyeglasses to solve these problems and give you clear, unobstructed vision at any distance with just a simple turn of a dial inside the eyeglasses frame.

And these glasses are called adjustable glasses or adjustable focus glasses. They are a versatile and affordable solution to correcting minor vision problems. They compensate for presbyopia and other refractive errors like farsightedness and nearsightedness. They are non-prescription glasses designed for everyday use.

You can see the top to look far away and look down to see near objects clearly because different portions of lenses offer different types of correction. With adjustable glasses, you have one focal length that varies depending on where you are looking.

Anyone can wear adjustable glasses, but they are especially beneficial for people who cannot afford regular glasses or for those who live in areas where regular glasses are not accessible.



What Are Progressive Lenses?

Your eyes change with your age. When your reach your 40s, you may find that it is difficult for you to focus between a book, a website on a computer screen and the conference room whiteboard. Progressive lenses are growing in popularity among people who need help seeing near, far and in-between.

Progressive lenses have grown in popularity and are one of the most common solutions to treat vision loss that occurs with age or presbyopia. Progressive lenses have a seamless increase in magnification from the top to the bottom of the lens, helping you see clearly at all distances with just one pair of glasses. The top portion of the lens enables you to see the far-away objects, the middle portion of the lens enables you to focus on the intermediate objects and the bottom to see objects close-up. The prescription changes little by little across the lens surface providing a gentle transition.

After knowing what the progressive lenses are, do you know what are the pros and cons of progressive lenses? If not, keep on your reading and we will show you some information.


Are yellow lenses good for night driving?

Yellow lenses are very effective even in low light conditions. They enhance contrast while you're driving. In other words, they broaden your horizons and allow you to see more cars, people, and objects on the road. Especially when you're driving at high speeds on dark roads, this widened, enhanced view can help you see more clearly. The transparent driver's glasses effect is not good. Headlight glare can be understood as dazzling light. The lens should be looked for from the angle of the stain. But the color should not be too dark to ensure safe driving at night. It is better to polarize the light. It can greatly improve the anti-glare effect.


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Sunglasses are a type of non-prescription sunglasses.

Sunglasses are popular non-prescription glasses. As a kind of non-prescription glasses, sunglasses can protect your eyes. Many sunglasses filter out ultraviolet lights, which can be harmful to your eyes. Wearing sunglasses can help keep your eyes healthy. Sunglasses have become fashion's flagship products, and countless products can be sold at different prices. The combination of function and fashion has made sunglasses the favorite type of non-prescription eyewear for consumers.

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