I'm not against buying glasses, but you need to know what data the merchant needs you to provide in order to help you get glasses.
Basic data such as power, astigmatism, axis position, and interpupillary distance are necessary, but just relying on these lists for merchants may not be able to successfully dispense a pair of comfortable and suitable glasses.
According to the formal process, such glasses are very likely to have after-sales problems, and the merchant may not be as enthusiastic as when receiving you in after-sales processing. The typical answer is "Customized products are not accepted for returns".
Why? Because the data is provided by you, the merchant is only responsible for processing. Therefore, I do not recommend that you simply take this list and go online for glasses.
Although I am not averse to buying mirrors online, I am very disgusted that merchants allow consumers to optometry in physical stores in order to complete orders, and even dare to match glasses with the data typed by the optometrist, and sometimes even let customers set the prescription casually!
So I have to stress again that optometry is more than just a prescription sheet! You need to know more about the parameters:
1. Power, astigmatism, axis position, interpupillary distance: these are the most basic processing parameters.
2. Corrected vision: How much vision can you achieve after the optometrist gives you the results of the test and wears it. This is very important, otherwise how do you know how clear it is after wearing glasses, whether it is foot correction or undercorrection, whether there are amblyopia and other problems.
3. All parameters of old glasses: this is very important! In physical stores or online, it is important to understand the evaluation of your old glasses. It can tell you changes in power and vision, as well as the degree of wear and tear of old lenses, deformation, wearing habits, etc. For example, if you have 200 astigmatism in refraction, but only 100 in old glasses, the online glasses are almost doomed.
4. Try on the optometry results: If none of the above options are feasible, this must be done! Try-on is the most critical part. Walk around wearing try-on glasses to feel if there is any discomfort. If there is no discomfort and the frame you choose is not a large frame, then there is a high probability that there will be no major problems with the glasses you match.
5. Pupil height: This is an additional parameter. This parameter is important if you have special lenses or large frames. Hot-selling products such as prevention and control lenses also need to provide more parameters.
In short, don't trust a single power list, understand these parameters to avoid unnecessary trouble.
I'm an optometrist Ah Xing, follow me to learn more about glasses