In recent years, the variety of discount eyeglasses online has increased, and the price has also risen. As little as five hundred dollars, as many as thousands of dollars. But spending money doesn't necessarily get you the right pair of glasses. Light lens is too heavy red nose bridge, heavy degree is not suitable for dizziness.
How do I get the right glasses?
① The degree of computer refraction is not “reliable”. The determination of the prescription requires the full communication and cooperation between the optician and the reliable optometrist.
In principle, it is not necessary to spend more special money on the frame, but special lenses can be considered according to actual needs and budgets.
How often do I have to re-examine?
Adults are advised to get an optometry every 1-2 years if their vision is stable. If you feel a change in your vision, you can always go to the optometry.
It is not necessary for adults to dilate their eyes before optometry, but it is recommended to relax their eyes as much as possible on the same day, and visual fatigue may affect the optometry effect.
Frames? Is it enough to look good?
It mainly depends on personal preference, but it also needs to be adapted to the lens and corresponding needs. For example, multi-focal lenses, the upper and lower distance from the frame should not be too short, because there needs to be enough space to accommodate different degrees.
If the glasses are higher, the frame is not recommended to be too large, otherwise the lens edge will be thicker, and the entire glasses will be heavier.
As long as it can meet individual needs, there is no need to spend too much money on frames in principle.
But if there are special needs, some lenses are worth spending more money, but also pay attention to distinguish, spend money on the edge of the knife.
Is it necessary to buy night vision correction lenses?
Night vision correction lenses can improve vision during night driving and night activities. They often have special technologies, such as anti-reflective coatings, to reduce reflection from headlights, billboards, and other light sources, thereby improving night vision.
In addition, in the dark state at night, the eye often appears involuntary adjustment, more than the natural light during the day some “myopia”. Therefore, according to the individual's symptoms, you can consider the night vision lenses used for driving to over-correct some myopia, but generally not more than 100 degrees.
Note that this kind of glasses are not suitable for seeing close, it will be more difficult, resulting in visual fatigue.
To sum up, if your eyes are healthy and don't have complex needs, lenses don't have to be expensive. If you have a high degree of prescription or reduced eye adjustment, you may need more than one pair of glasses (or a more expensive pair) to be perfect for a variety of eye situations.
But be aware that no “efficacy” glasses are a substitute for good eye habits. Even with the best glasses, it's important to rest your eyes a lot. Look 6 meters (20 feet) away and relax for at least 20 seconds for every 20 minutes you use your eyes up close.
