Many people may think that the so-called medical optometry is nothing more than "testing the power of the eyes". With the results, you can buy glasses "online", and glasses are so cheap online.

In fact, the optometry prescription is a "measurement result" of the refractive status of the patient's eyes, but it may not necessarily be the glasses prescription that is truly suitable for you.

Just like a tailor measuring the length of your legs before making pants, there should be a standard answer to this. But before making trousers, the tailor will definitely ask you about your personal preferences. Some people want the trouser legs to be shorter to expose the ankles, while others want the trousers to be longer to cover the uppers. This requires making personalized corrections based on the customer's requirements based on accurate measurement of the customer's leg length.

The same goes for wearing glasses. Optometry results are like the customer's leg length, but the prescription for glasses is the conclusion given by the optician and optometrist after making necessary corrections based on the customer's use of glasses, age, occupation and other information, or it can be understood as " Prescriptions for Life”.

Selecting frames is a technical task

Frames don’t just have to be cheap and good-looking, there are actually a lot of considerations to be made about them.

1) Stability of the frame

When choosing a frame, you must first look at the stability, whether it can fit comfortably on the ears and not slide down when you lower your head. It will not move or shake when beating or shaking your head, because when each pair of lenses is processed and manufactured, the optical center of the spectacle lens must match the center of the wearer's pupil, so that the eyes will be comfortable, and the same is true for the spectacle frame.

If the frames are not appropriately chosen, they will easily slide down or move. Continuous changes in the brightness directly facing the eyes will easily cause adjustment fatigue. Therefore, frames and lenses that shift less will be more comfortable to wear.

2) Weight of the frame

For some people with high myopia, the lenses will definitely be thicker. If the frame is asymmetrical and the left and right weights are inconsistent, the weight of the glasses will shift to one side. , causing pressure on the nose or ears. Frames made of other materials, such as metal, are heavy, prone to rust and deformation, and can easily cause facial allergies and pressure on the bridge of the nose and temples.

3) Design of nose pads

When wearing glasses, you should check whether the nose pads are round and smooth, and also pay attention to the distance between the nose pads and the eyes, because if the nose pads are not in the correct position, they will cause damage to the nose. When pressure is generated, "little red pits" will be left on the nose over time.

General optometry assumes that the distance between the lens and the eye is 15mm. If it is lower than this value, the prescription for myopia fitting will be higher than the actual prescription of the eye. Especially for highly myopic eyes, special attention should be paid to the nose pads when changing glasses. distance from glasses.

The above three points can only be fully reflected when you go to a professional eye hospital for optometry and glasses. You can’t just buy them online because they look good and cheap!

The frames also need plastic surgery

After a pair of glasses is fitted, if you feel any discomfort when you go to the hospital to get the glasses, you can reconfirm the prescription, facial contour, ear position, and usage. Habits, etc., the optician will adjust the frames according to these conditions to improve wearing comfort.

Just imagine, if there is a problem after receiving the glasses you ordered online, you have to contact the seller’s customer service first to report your problem, and then what? Basically, there is nothing else to do except return the goods.