Buying eyeglasses online can save you money, but you need to be aware of some things before you order your own glasses. You need a prescription before you can order eyeglasses online. You will need to know the terminology on the prescription to give the online order. Things like OD (Right eye) and OS (left eye) need to be put in accurately or your eyeglasses will not work for you. The same holds true for the PD (the distance between your pupils). This measurement is difficult for you to get on your own, so you should have your optometrist give it to you when you get your prescription.
After you have your prescription, you need to choose frames. In this way, ordering glasses online is better. You can upload a picture of yourself and place different frames on it until you get the look you want. If you do this in an optometrist's office, your eyes will be dilated and you won't be able to see well enough to know if the frames look good or not. You also need to know which coatings you want on your lenses. You need to decide which lens material you want used. Do you want high-index lenses or regular plastic lenses? If you wear bifocals, you might not be able to buy online. Most sites don't offer multi-vision lenses because they need to have added measurements and different powers put in the lenses.
When choosing frames online, you need to be sure you choose the right size for your face. This is where the option of loading your picture to the site helps. You can "try on" glasses until you get exactly what you want. You can make sure they aren't too big or too small. Some online stores will give you tips on how to choose the correct frame for your face.

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