1. Taking off and wearing glasses with one hand is the main reason for the distortion of glasses
The mirror ring and the temple are connected by a hinge. If the temple and the hinge are pulled out with one hand frequently, it is easy to loosen the screws of the hinge on one side due to the uneven force on both sides, resulting in the temple. One high, one low, or one tight and one loose, causing the glasses to become crooked.
2. Everyone's face is not completely symmetrical
Some people also have differences in the height of the two ears, that is, "high and low ears". If you order glasses from the Internet or the spectacles organization is not professional, and you have high and low ears, the glasses may become crooked.
Professional opticians will generally fine-tune the glasses again to make the glasses fit more closely to their face. Through reasonable adjustment, the glasses can generally be made to look level and correct, and to wear comfortably.
3. The problem of the glasses itself is also one of the reasons for its distortion
For example, the material of the frame is soft and the hardness is not enough, or the problem of the glasses during processing causes the reverse plastic force of the lens to the mirror ring to be too large; if the glasses are not cleaned for a long time, the temples are frequently opened and closed, and the accumulation of grease and dust will cause the hinge and nose. The loss of the support may cause the glasses to become crooked.
4. The glasses are deformed due to external force such as breaking or crushing
Usually after taking off the glasses, if possible, try to put them in the glasses case, or put them in a safe place to avoid damage to the glasses.
What are the dangers of wearing crooked glasses for a long time?
The power of the lenses, especially those with a high degree of astigmatism, is not the same for every angle. If the glasses are crooked, the external light cannot reach the pupil through the optical center of the lens, which will cause the horizontal shift of the interpupillary distance and the axial shift of the astigmatism. The degrees do not match.
Long-term wearing of glasses that do not match your degree may cause myopia to deepen faster. In particular, many parents choose functional lenses such as panfocal lenses and multifocal lenses to protect their children's vision. This kind of functional lens also needs to record the eye pupil height of the wearer, and it is necessary to ensure the correct posture when wearing it, otherwise it will not only protect the eyesight, but will accelerate the development of myopia.
In addition, crooked glasses will produce a certain prism effect, which will deform what you see and increase your fatigue. Some people may experience dizziness, nausea and other symptoms after long-term wearing because they cannot adapt to mismatched glasses.
How can I tell if my glasses are crooked?
For a suitable pair of glasses, the mirror rings on both sides should be horizontal, the distance from the upper edge of the left and right mirror rings to the eyelids is equal, the eyes are roughly between the upper 1/3 and 1/2 of the glasses, and the distance from the lens to the eye is about 12 mm, and the lens cannot touch the eyelashes, the lens is about 8-15 degrees forward when viewed from the side. The nose pads and temples on both sides fit comfortably with the face without clipping or loosening.
How to test yourself?
First, take off the glasses and place them on a horizontal surface with the front side up. Observe whether the opening and closing of the two temples are symmetrical, and whether the lower edges of the two lenses and the two ear hooks are stable; Whether it is docile with the desktop; then close the glasses and observe whether the left and right temples can form a straight line.
How to correct glasses?
The first place where corrective glasses can be adjusted is the temples.
Bend the temples to make the temples and the back of the ears more tightly, and pay attention to the level of the angle of the glasses. You can also add anti-slip sleeves to the temples to further fix the position of the glasses and prevent them from sliding down.
The second place that can be adjusted is the nose pads.
Ordinary glasses are divided into those with nose pads and those without nose pads. For glasses with nose pads, if the distance between the left and right nose pads is too large, it is easy to cause the glasses to slide down. It can be improved by adjusting the position and distance of the nose pads; for those without nose pads Glasses can choose to stick nose pads to prevent slipping, but pay attention to regular cleaning and replacement.
It should be noted that for people without any experience in corrective glasses, it is not recommended for everyone to adjust by themselves.
If the material of the spectacle frame itself is hard, too much adjustment force will easily cause damage to the spectacle frame. In addition, if it is only adjusted by itself, other problems may be caused to the glasses, which will further damage the glasses.
When you find that your glasses are crooked, you must find a professional optician to adjust them in time, or replace the glasses frames in time to avoid damage to your eyes. At the same time, the glasses should be cleaned and maintained regularly, and the dust in the nose pads and hinges should be cleaned in time to prolong the service life of the glasses.
