The mystery of myopia riding companions is coming! ! !
As a senior myopia, Zong Bojun is inconvenient on many occasions. For example, when swimming, can not find his own partner to pick glasses, okay; while running, while supporting his glasses; summer, because already wearing myopia glasses is not convenient to wear sunglasses, say more It's tears. Believe that the myopic riders feel deeply about my experience. Today, the body Bojun to bring a benefit for everyone, is how to match a comfortable riding mirror.
The riding mirror is one of the indispensable equipment, and the benefits it brings are self-evident. So how can we get a comfortable riding mirror? Body Bojun has something to say.
First of all, first of all, let everyone talk about the factors that cause ordinary glasses to cause discomfort. 1 There is an error in the refraction (inaccuracy of the degree) 2 There is an error in the pupillary distance 3 The frame is not suitable for the quality problem of the 4th lens and so on. In fact, glasses is a very complicated thing, there are too many factors that affect the body Bojun does not give you a detailed explanation, to be honest is really doing conscience glasses, the domestic you know. According to the body's own experience and the results of consulting with an optician, the following four conclusions can be drawn from the reasons why the myopic riding glasses are uncomfortable to wear:
1, myopic riding mirror polarizer curvature is very large (in order to achieve the effect of blocking, must be designed) caused the lens is very close to the eyes. In such an eye-catching situation, but also in the middle plus an embedded myopia frame, it is conceivable that there is no space, many riders reflect the eyelashes touch the lens, a pair of normal optical glasses to the eyes The distance standard is suitable around 12mm. What happens if the distance shortens? We can try it out: If you now have a pair of optical glasses, you can try to slowly translate the glasses forward, you will find that the line of sight will be more and more blurred. The reason is very simple, the closer the lens is to the eye, the clearer it is to increase the degree of the lens in disguise, and if the degree is high, it will naturally dizzy. So how do we solve this problem? Bo Bojun thinks: 1 Properly reduce the 25 degree or 50 degree in your original optical power. 2 Now most of the myopic riding mirrors are for convenience of production and design, and a myopic frame is inlaid directly on non-myopic riding mirrors. It becomes a myopic riding mirror. This is wrong (as shown in the picture) ).
Bo Bojun suggested not to purchase similar products. It should purchase nearsighted frames to the eyeglasses with a large distance between the eyes (about 12mm is suitable. Asians' noses are more flat and leave us less space). If the distance is not enough, it is best to buy an adjustable metal nose pad, because the distance from the eye to the glasses can be adjusted by the nose pad, and the natural distance will increase when the nose pad is properly adjusted (see Figure ↓↓↓).
2, myopia frame bending problem
The inner frame of many myopic riding mirrors on the market is directly embedded. Its curvature is almost the same as the curvature of the outer polarizer. The arc of the inner frame is very large, and the curvature of the normal optical frames is about 5 degrees. Obviously the arc is too large to cause discomfort. (From an optical point of view, the curvature of the frame should match the rotation of the eyeball is the best, but matching the curvature of the eye rotation is not necessarily the best, because also consider the best combination of curvature of the lens, and lens thickness The impact on the wearer, so there is no way to achieve a best arc, you must make concessions in the arc, so there is no best way to say this angle.This angle is good for some degrees, not necessarily for other degrees Good for some people, but not necessarily for others
However, we have many conditions that cannot be met and can only guarantee the normal range. Then how do we solve it? It is very simple to choose a riding mirror with a small face bend (such as the figure below).
3, interpupillary distance and pupil height problem
Because our usual riding posture is forward sloping (as shown in the following figure), we must be riding for a long time to see the distance, the line of sight to look close to raise the line of sight, line of sight elevation involves a change in pupil height . The pupil height we usually wear glasses is definitely lower than the pupil height in the riding state. Therefore, the pupil height of myopic riding mirror is relatively high. Here we introduce a concept (pictured), in order to ensure that the pupil is aligned with the optical center of the lens, the accuracy of the pupil height and the interpupillary distance must be ensured. Pupil distance can be measured by professional instruments. The pupil height measurement should be based on the actual wearing situation. It means that you should go to the optician to ask a professional optometrist to give you a pupil, and then you can take a riding mirror to simulate riding posture. Let him give you a high pupil.
4, myopia riding mirror and lens selection
Poor quality glasses do not endanger the health of vision for a long time. Low-quality riding glasses cannot filter ultraviolet rays. If you wear such a riding mirror, it is more dangerous than not wearing them. Not only does not shield the effect of UV, but also produce dizziness, sore eyes and other symptoms. It is recommended to buy a slightly higher price point, like the following figure is folded specifically designed for myopia, this solution to many problems (preferably to meet the flip, myopia frame curved small, adjustable metal nose pads). The choice of lens: low degree is best to choose spherical lens, height number choose aspherical lens, brand and price to choose their own economic situation.
Buy a quality riding mirror that meets the above four points, then with a comfortable and cool riding mirror is a sure-fire, and finally a very important step, it is recommended that readers digest the knowledge of this article, find a Relying on the optical shop to find their processing master, reflect these questions to him and communicate with him so that he understands your intentions. If you are uncomfortable when you are wearing it, let him adjust the frame for you (adjustment is very important).
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