Pick out the frames.

When I was looking for frames, I only knew one criterion: which one looked good. But in fact, the choice of frame will greatly affect the comfort of a pair of cheapest eyeglasses.

A pair of comfortable frames, after wearing should meet three criteria:

First of all, our normal words should be the lower eyelid in the middle of the frame, the black eye in the middle of the upper 1/3, this is the position of the golden proportion of our glasses.

Second of all, with this frame, the top edge doesn't touch our eyebrows, and then the bottom laughs, and it doesn't touch our apple muscles, and the side, it doesn't squeeze our temples.

The most important thing is to highlight this line of the face.

My old frames didn't meet any of those criteria. It's too big, it hits the apple muscle, it falls off easily, and I can't see through the optical center of the lens. So no matter how expensive the lenses I used, it was bound to be a very bad pair of glasses.

But no one told me these points when I was choosing a frame. Please be careful when you choose the frame.

As for Lang Zhong's third criterion, to highlight facial lines, it has a simple criterion:

On the inside leg of each frame, or on a blank sheet, you can see a string of numbers like this. It represents the size of the ring, the width of the bridge of the nose, and the length of the leg.

According to the textbook instructions, the size of the mirror circle should meet this formula. But Lang Zhong told us that the range of this formula is relatively large, and the vast majority of frames can be satisfied.

When we actually choose, the more practical criterion is: the size of the mirror circle, preferably equal to the width of the cheekbone.

Lang Zhong: For example, we can take very small frames. The position of the cheekbones is much more than that of the glasses. It's going to feel like I have high cheekbones, and it's going to feel like I have a lot of meat here.

For example, if the box is too large, especially if the thickness of the lens is thick and the degree is high, there will be two refractions on this side, so the line will appear to be layered on the whole face.

According to the results of the trial, I am most suitable for the width of 50, 51. And my previous frame, the size of the mirror circle up to 53, obviously too wide.

In addition to meeting these three basic requirements, there are some tips for selecting frames according to the results of optometry.

For example, if the direction of astigmatism is horizontal, pay extra attention to the shape of the frame:

Like there are some people in the astigmatic direction, he is in the horizontal direction. If his astigmatism is large, say 150 degrees or 200 degrees.

Then we are more recommended to choose this, the upper and lower relatively narrow frame. It is not recommended that he choose this particularly long frame, because the upper and lower frames are particularly long, and the lenses in these two positions of horizontal astigmatism will be relatively thick, and it is easy to wear uncomfortable or deformed.

And the degree of myopia is relatively high friends, you can choose a slightly thicker side frame:

Lang Zhong: For those with high degrees, we can also look at this side when we choose a frame. For example, this position is thinner and this position is thicker. The thicker this is, the better it'll stop the lens.

As for the material and weight of different frames, there is no good or bad, and there is no special need, which you like to pick which. And it's not that the more expensive the frame, the lighter and better:

The weight actually has no effect on the clarity of the wear. However, the comfort of wearing varies from person to person..... There is no absolute difference between a design and it. It's not that the lighter the glasses, the more expensive they are, or the better the material.

After choosing the right, good-looking frame, we can move on to the next step: picking lenses

Different frames also have different requirements for the thickness and strength of the lenses. For example, choose a very thin side frame or half-frame glasses, which generally want to choose a higher refractive index, thinner lens;

And frameless glasses require greater strength of the lens, generally can only choose PC lenses or super tough resin lenses.

As for the specific lens selection, you can watch this video we did before.

To sum up, if there is no special need, but to be clear and stable, whether it is a domestic or foreign brand, as long as the raw material qualified serious lenses, it can basically meet most of the needs. My degree is not high, so the doctor gave me a foreign lens with a refractive index of 1.60.

The lens you choose needs to be processed according to the shape of the frame. During processing, the optical center of the lens in the horizontal position is determined by the pupil distance. The optical center in the vertical position is generally 2-4mm higher than the center of the frame: this is also the reason why the black eye should be in the upper 1/3 of the glasses when wearing glasses.

Alternatively, the optical center of the vertical position of the lens can be determined by measuring the "pupil height", that is, the distance between the lower edge of the frame and the pupil. Obviously, the "pupil height" will also vary depending on the frame you choose.

So far, we've done the optometry, picked out the frames, the lenses. When the lenses were finished, I finally received the new glasses.

But wait a minute! I still need to put it on and make some final adjustments.

When we get the new glasses, we need to nail down a few face-to-face details. First of all, the nasal pad should be adjusted for you and stuck on your face, so that you shake it slightly up and down or left and right.

Secondly, the two sides of the ear hook will feel the pinch tight. Yeah, it's not tight. Yeah, it's stable, but it doesn't pinch.

Then you smile, see if this position does not hit the apple muscle. Well at the same time we can, we need to make sure that the side, where you look straight in front of you, yes and then I need to make sure that this Angle on the side of the lens, where your eyelashes don't touch your lens every time you blink, is the right Angle, the right distance from the eye of the mirror.

Here, I finally have a pair of professional, clear, stable glasses. They're not expensive, but they're the most comfortable glasses I've ever worn.