Where can I buy prescription glasses online?
DIFF Eyewear
DIFF Eyewear is known for its personalized sunglasses, with a large selection of bold and stylish frames. However, you can still find anti-blue light glasses and regular prescription glasses on the site. You're sure to find plenty of fashion-forward options here.
Warby Parker
Warby Parker's mission is to provide designer-style frames at an affordable price. The brand provides a home trial-on service, where you can pick up five pairs of glasses. Warby Parker will give you the freedom to try on before you buy. You can sort through all the frames they've collected, or you can take a short online test that asks you for your preferences like frame materials, shapes, and colors, and then narrow your selection down to only frames that fit those specifications.
KoalaEye Optical
KoalaEye is a new brand of glasses. From concept, design to manufacturing, we control and supervise the entire process. This allows us to save on the cost and give you a favorable price. KoalaEye provides everyone with high-quality glasses at an affordable price.
There are many ways to choose sunglasses, but shouldn't everyone have an affordable pair of glasses to make themselves look good? KoalaEye believes that everyone should have a pair of high-quality glasses, and more importantly, affordable. When sunglasses are an indispensable part of our daily life, the price should not be too high. KoalaEye would like to provide more economical glasses for people all over the world.
Step-by-Step Glasses Size Guide
In this section, we will show you how to perform glasses measurements. But the first thing is to know what face shape you have. If you do not know, click here to have a check.
Then you need to know where to find the size measurement of your glasses. In general, you will find numbers that look like this 51-17-145 at the temples of your eyeglasses. Of course, these numbers come at different meanings.
The first number often refers to the lens width. Lens width is the horizontal diameter of the lens at its widest point. In optometry, another term is eye size.
The second number often means the bridge width. Bridge width is the part that joins the two lenses and sits over the nose. Some refer to this as the gap. The bridge width varies between 14 and 24 millimeters.
The third number often means the temple length. The temple is the arm that keeps the sunglasses on your face. That arm extends to the part that hangs on the ears. The length is usually 135, 140, or 145 millimeters.
Lens height measures the size of the lens vertically, that is from the top to the bottom of the lens. Although sizes may differ depending on the brand, the standard size is somewhere between 32 and 38 millimeters.
Choose the frame according to the face shape
Just like hairstyles and beards, frames should also be chosen according to your face shape. Of course, there is more than one frame for each face shape, and you can also prepare a few more pairs for yourself to match different styles. Try to avoid wearing spectacle frames that are too similar to the face shape, so as not to cause the lines of the face to be over-emphasized. Usually, the shape of the face is round, oval, square, rectangle, and heart-shaped. For example, if your face is square, you should choose glasses frames that are slightly wider than the shape of your face. This will make your face shape looks slightly slender. If the face is round, angular and square frames will help modify the lines of the face.
Why are eyeglass frames are so expensive?
Good frames and bad frames are very different just in how they feel. The bigger the brand company, the more money it invests in the design, research and development, production equipment, and equipment of the lens frame every year, so as to improve the wearing comfort and improve the combination and precision of the lens. Even if for the general assembly line, the processing process is also very complicated. The most expensive things to make by hand are labor and time.
Aspheric lenses are different from spherical lenses.
Spherical lenses: The higher the strength of spherical lenses, the worse the visual experience, because the spherical lenses do not eliminate aberrations. Aspheric lens: it can greatly reduce the deformation of things and make people see more clearly and vividly. Besides, the eyes are not easy to get tired and the appearance is beautiful. It reduces the aberration of the lens and ensures a clearer field of vision.
When the parameters of the lens are normal, the optical center of the myopic lens is the clearest, and the peripheral part of the lens will be slightly deformed. So now the lens is designed with an aspheric surface. Under normal circumstances, the mainstream aspheric lens in the market has a reduced edge design, which is about 5 to degrees lower. The opposite edge of a spherical lens is higher.
The effects of night blindness on driving
As we age, our pupils will be narrow little by little, so they can't dilate as quickly. The smaller the pupil, the less light reaches the retina, making it harder and harder for the retina to see at night. This is called night blindness, and it's a condition that makes it difficult for your eyes to adjust from bright light to dim light. This makes driving at night especially stressful in your 50s, 60s, and beyond.
Glasses frame material
Children with glasses can choose a soft silicone material frame. Soft silicone is light to wear and soft at the same time. It is comfortable and does not break easily. The child is young and still in the stage of development, so consider comfort when choosing the frame. A light frame is more comfortable, such as a titanium frame, TR plate, silicone. Or the glasses should be matched according to the child's face shape and pupil distance.
