What Are The Best Sunglasses For Fishing?
Fri, May 06, 22 By : Koalaeye
How to Know If You Need Bifocal Glasses? As you get older, you will find that is more and more difficult to read or focus on things that are really close up. This is called presbyopia and it is a common eye condition among older people. How to know if you need bifocal glasses? If you find yourself squinting at the text that once was easy to read or your vision is blurry, you may need to see an eye...

How to Know If You Need Bifocal Glasses?

As you get older, you will find that is more and more difficult to read or focus on things that are really close up. This is called presbyopia and it is a common eye condition among older people.

How to know if you need bifocal glasses? If you find yourself squinting at the text that once was easy to read or your vision is blurry, you may need to see an eye doctor. In this situation, you may need bifocal glasses to correct your eyes.

If you currently wear glasses but see print more clearly when you remove them, it is a sign that you may need bifocal glasses in the future.

To know if you need bifocal glasses exactly, check your eyes by an optometrist or ophthalmologist.


The lifetime of contact lens

Traditional type: the replacement cycle is more than 3 months, not more than 1 year, that is, we say we abandon after one season, and we can abandon after half a year and a year.

Frequent-change type: the replacement cycle is more than 2 weeks, not more than 3 months, that is, we often say that we throw them after 1 month or two weeks.

Abandoned type: as a one-time use, common for the day use.

Contact lenses, like food, have an expiration date. For example, the shelf life of daily contact lenses is one day (after it is opened), and can not exceed this time. And the life span of a pair of glasses depends on how long you use them each day. Although different lens materials determine different wear times, we recommend that soft lenses should not be worn for more than 8 hours per day (do not wear soft contact lenses to sleep). Traditional contact lenses can be used for a long time, so the lens is easy to produce protein-lipid deposition, and then they are easy to cause eye surface inflammation and hypoxia reaction. If conditions permit, it is recommended to choose the frequent-change type and discard type, the shorter the cycle, the healthier.



The disadvantages of progressive lenses

  1. The field of view in the near and middle distances is relatively narrow.
  2. The adaptation time is longer and patients with greater astigmatism are not suitable for wearing.
  3. The peripheral aberration is large, and there will be large astigmatism in the periphery.


Who is suitable to wear progressive lenses

Progressive multifocal glasses are suitable for people with presbyopia or visual fatigue, especially teachers, physicians, musicians, computer operators, etc. They not only need to see far and near objects, but also most of the time, need to see objects at intermediate distances such as blackboards, piano scores, and computer screens. A pair of scientifically customized progressive multifocal glasses can simultaneously meet the needs of distance use, near use, and various distances in between. Some special young myopia patients wearing progressive multifocal glasses can also be used to correct the refractive power and effectively relieve eye fatigue.



OSKIDE night driving glasses

With excellent night vision, this product can provide you with clear vision when driving at night, on cloudy or rainy days. In addition, it can protect you from the sun's harmful rays and bright headlights. Made of durable materials, they are flexible enough to withstand strenuous exercise and high-intensity outdoor activities. Equipped with polarizing lenses, they reduce glare and improve clarity when bright lights may be distracting, so they are perfect for sunny days or night driving. And it has UV 400 UV protection function. It protects your eyes from harmful ultraviolet and blue light.


The nose pad is very important.

It could be that the nose pad is too hard. You can replace it with a non-marked soft nose pad. It is recommended to choose a thin and long or broad-leaved nose pad, moderate hardness, which can effectively disperse the force of the nose, with stable support, bringing comfortable wearing. It avoids a soft nose pad on the bridge of the nose because of sweating or a long time to wear left indentation. Eyeglass frame nose pads are in direct contact with the bridge of the nose, and too hard nose pads can damage the skin around the bridge of the nose. Therefore, try to choose a silica gel nose pad and other soft materials. The first one is that the silicone has good softness and will not damage the skin. The other is that it can fit perfectly with the bridge of the nose without foreign body feeling.



Why are titanium glasses so expensive?

Comfortable to Wear. Pure titanium frame can get rid of the stiff, heavy, easy-to-deform shortcomings of the common glasses frame, closely with the color plating process, indicating youthful vitality and a three-dimensional sense. They have no magnetic reaction, so they are not allergic to skin. It has the benefits of corrosion resistance, allergy resistance, and fatigue resistance. Ergonomic, titanium material is non-toxic to the human body. They have no radiation. They can be changed in the width according to the size of your face, and maintain the situation. Compared with other metal materials, it is not easy to deform and fade, and has strong stability, highlighting the noble taste and elegant temperament.

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