What vision plans does Costco accept? | KOALAEYE OPTICAL

What vision plans does Costco accept?

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The TR90 Spectacle Frame

TR90 frame is a kind of polymer material spectacle frame with memory, no chemical residue is released, and it meets European requirements for food-grade materials. It is currently an internationally popular ultra-light spectacle frame. TR90 frames have the characteristics of super toughness, impact resistance and abrasion resistance, and low friction coefficient, which can effectively prevent damage to the eyes and face caused by the breakage and friction of the frame during sports. Because of its specific molecular structure, it has good chemical resistance, is not easy to deform in high temperature environment, can withstand high temperature of 350 degrees in a short time, and is not easy to melt and burn. Moreover, the TR90 spectacle frame has a lubricating surface with a density of 1.14-1.15. It will float when placed in salt water. It is lighter than other plastic spectacle frames. It is about half the weight of the sheet frame and 85% of the nylon material. It can reduce the burden on the bridge of the nose and ears.


QINA glasses

The clear frame glasses are classic, understated, simple, and stylish, defined by clean lines and minimal details. Whether you have an important meeting to attend or are relaxing in front of your favorite show, clear frames can easily blend into your wardrobe.

Founded in 2013, it is a fashion brand for young people and launched by the merger of two major eyewear companies Essilor and Luxottica. Dedicated to the study of pop culture and different product attributes, they bring interesting collocation creative inspiration for the young groups. Sunglasses and optical glasses are available, where stylish young people can find a variety of styles. Frame price is 300~500 or so commonly.



Are blue light glasses good for driving at night?

Are blue light glasses helpful when driving at night? The answer is not necessarily. Anti-reflective coating on glasses is beneficial. But blue light blocking won't have any effect on your driving at night. If your glasses have an anti-reflective coating, then they might be helpful for night driving. Otherwise, they won't have any impact.


Wear blue light glasses before bed.

Because blue light can have a huge impact on your sleep cycle, these glasses are pretty important before bed. So, putting on blue light glasses before you go to bed can help increase melatonin, which in turn helps you get a good night's sleep. Sleep glasses display a wider range of blue light, which naturally helps you sleep better and triples melatonin production. They have a slight lens color because they target a wider range of light, but are best for sleeping. In addition to sleep glasses, there are nearly transparent optical glasses that filter out blue light levels to help treat digital eye strain, which is made up of headaches, blurred vision, and eye strain.



What Is Bifocal Lens?

Bifocal lenses are divided into two parts to accommodate two different prescriptions in one lens. One is for distance prescription and the other is for near vision prescription. Bifocal glasses are used to correct the presbyopia eye condition.

Bifocal lenses are with lines separating two different prescriptions. With bifocals, you don’t get the single-vision lens look with them as you do with progressive lenses. If you don’t need to see through two prescriptions, bifocal glasses are an excellent option. Bifocal glasses come with the following features:

  • Two vision zone. (One for near vision and the other one for distance vision.)
  • Has a distinct line separating the powers.

However, with bifocal glasses, you may have trouble reading computer screens and causing a greater risk for computer vision syndrome.


The history of chromatic contact lenses

Chromatic contact lenses, commonly known as color Lens, is a kind of Soft hydrophilic Contact Lens, belongs to the third category of medical devices. In 1971, Bausch & Lomb introduced the world's first pair of soft contact lenses. Before this, contact lenses are made of hard materials, with poor comfort, difficult to promote. Soon after, CIBA Vision made the lenses aqua blue to make them easier for users to operate. There were also special contact lenses with dark loops on the lenses, which were designed to help people with injured or defective eyes, like corneal white spots or iris defects, to conceal flaws, forming artificial pupils, so they were called beauty lenses.

Then, in the 1980s, American company Wesley Jessen (later bought by VisiCon) introduced the FreshLook chromatic contact lens, which used laser technology to print colored patterns onto the lens to change the color of the wearer's iris. Since then, contact lenses have been developed from a simple vision correction tool into a cosmetic with the effect of beauty makeup. It can brighten, enlarge, darken or change the color of the iris of the eye. At present, the common chromatic contact lenses are black, brown, gray, purple, blue, green, and so on. There are also a variety of color combinations or some special patterns.


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Hinge welding difference between Pure titanium spectacle frame and titanium alloy spectacle frame

The pure titanium glasses frame will not contact oxygen in a vacuum during the welding process. The titanium frame is welded (called spot welding), which creates a slope shape and is one of the most effective ways to distinguish between the two frames. Pure titanium glasses frame, in the hinge part, will not be in direct contact with titanium. And titanium glasses frame will directly contact with titanium, easy to cause wrinkles in the joint, so the temple has obvious unsmooth phenomenon.

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