what is sph and cyl? | KOALAEYE OPTICAL

what is sph and cyl?

How to determine whether progressive lenses are worn correctly?

Once your glasses are back from the lab, the optometrist will let you put them on for an audition and make final adjustments to make sure they fit. If the prescription is not in the center of the lens, it will make it difficult for you to see clearly. The key is that the lenses match the wearer's eyes, especially the pupils. Before ordering a new lens, the optometrist takes two measurements: pupil distance and fitting height.


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.



Are children optometry matched with glasses the same as adults?

The optometry of children is one of the main works of optometry. Compared with adult optometry and glasses, children's optometry and glasses have both commonness and particularity. It is an area at the intersection of pediatric ophthalmology, pediatric optometry, and optometry. It requires the operator not only to have the knowledge of ophthalmology but to have the basis of children's ophthalmology and children's optometry. And they should be an optometry expert. Dealing with children's refractive problems is as much an art as a technique.


Where to Buy Cat Eye Glasses?

Do you know where to buy the cat eye glasses or prescription cat eye glasses? To buy cat eye glasses, here is a choice for you. You can choose to buy them from Koalaeye Optical, which is an online optical store. It provides all kinds of eyeglasses, sunglasses and frames, such as blue light blocking glasses, progressive glasses, polarized sunglasses, and so on. It also provides cat eye glasses and prescription cat eye glasses.

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Besides, Koalaeye Optical offers different colors of cat eye glasses. So, you can choose the best one for you. In addition, Koalaeye Optical provides free shipping service.



Titanium alloy

The definition of titanium alloy is relatively broad. As long as it contains titanium material, it can be called titanium alloy. Therefore, the quality and grade of titanium alloy glasses frames are uneven, and the component of titanium alloy has a direct impact on the price of titanium alloy glasses. Titanium alloy glasses are made not to reduce the cost, but to improve the application performance of the material.


How to Choose Glasses for Heart Shaped Face?

Wearing a great pair of glasses can make you look more beautiful and fashionable. You want to find a pair of eyewear to correct your vision. Of course, they should be comfortable to wear.

Everyone has their unique style. So, finding a pair of great sunglasses is not an easy job. So, in this post, we will show you some suggestions to glasses for heart shaped faces.

Before proceeding with how to choose glasses for heart shaped face, you need to know whether you have a shaped face. Heart shaped face has some obvious features, such as a broad forehead; high, prominent cheekbones; a narrow jawline; and an angular chin. So, you can check whether you have these features.

However, if you do not know what face shape you have, you can click here to take a reference and have a check.

After checking the face shape you have, we will show you some glasses for heart shaped face.


Prezzo di venditaDa
Prezzo di venditaDa


Glasses donation is also a form of recycling.

The old glasses were donated, and the love glasses were favored and recognized by the public. It is mainly aimed at orphans, left-behind children, single-parent families, and adolescents with mental retardation in poor mountainous areas. It lets the children who can not afford glasses really feel the care and warmth brought by people from all walks of life. Encourage them to take good care of their eyesight, study happily and grow healthily. And it can enhance the self-health care consciousness of young students.

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