Optometry for prescription glasses
The key prerequisite for proper glasses is accurate optometry. In foreign countries, professional optometrists are generally required to be qualified to issue prescriptions for optometry. However, this is not very standardized in China. Many optometrists have only been trained for a short period of time and do not have the basic knowledge of ophthalmology. For some complex situations, they may not give a proper prescription for glasses. Therefore, optometry should choose a qualified institution. If you are adolescents, people with high myopia, people with anisometropia, etc., you may need to dilate your pupils for optometry. It is best to go to the optometry center of the hospital for optometry.
Reading Glasses
At present, there are two prescriptions for reading glasses. One is to adjust the power of glasses with clear objects at close range, plus 1/3 of the power for adjustment. The other is to use low power that can see close objects clearly. The practice of many elderly people has proved that the latter one is better between two methods.
The production process of titanium frames is complicated.
The production of titanium frames requires special processing equipment, special welding technology, and electroplating technology, which has many processing procedures and high production costs. In particular, some glasses choose the most difficult pure titanium andβtitanium. Titanium is very soft and very sticky, and very lively at high temperatures,so the processing is very difficult.
How to Choose Reading Glasses?
If you need reading glasses when using a computer, you may want to choose a lower reading glasses power. This is because most people view their screen from a greater distance from their eyes than when they are reading a book or a magazine.
However, if you need reading glasses for looking at something very close or very small, you may need a pair of stronger power glasses.
In most cases, when two reading glasses’ powers seem equally suitable, choose the glasses with the lower power. Picking reading glasses that are too string typically will cause more discomfort problems than reading glasses that are a little too weak.
New Fashion Police Men's Polarized Sunglasses Driving Glasses
They have high quality. The lens material is a polarized lens. The frame color is silver/gold/brown/black and the visibility rate is 99(%). UV protection rating is UV400,with 100% UV protection. They are suitable for driving, fishing, daily leisure.
Most accidents happen at night and before dawn, which has a lot to do with glare and the problem of many people having blurred vision in the dark. Every driver knows the trouble of driving at night: glare, bright reflections, and bright lights from oncoming traffic. In addition, poor visibility at night can make driving tiring and dangerous!
Protect the lenses of your safety glasses.
Scratches can be caused by damage at work, aging, improper care, improper cleaning, or improper storage. Whatever the cause of a scratched lens can affect vision quality through the polycarbonate, causing eye strain. Make sure the safety glasses lenses are replaced in time when they are scratched.
Transition Lenses Problems
It is not convenient to rely on photochromic lenses when driving. It also may be unsafe if the driver depends on the prescription to see or is legally bound to wear prescription lenses when driving.
Besides, transition lenses are typically the size and shape of regular vision-correction lenses, which allows them to accurately correct the field of vision, but does not account for peripheral areas on either side of the visible range. Sunglasses operate by maintaining very dark glasses that expand over the field of vision and the peripheral with large, oblong lenses that block sunlight from both the front and sides. However, transition lenses are not typically dark enough for heavy sun and cannot block light penetration on the peripheral, leading to people having to resort to sunglasses again.
Of course, there are some benefits of transition lenses and you can click here to learn more.
