What's the meaning on eyeglass frame?!
Question: What's the meaning on eyeglass frame?
Wait, another question. I found some frames for sale on ebay. If I buy one of those with the correct measurements for my face, how will I get the glass changed to fit my prescription? should I just bring them to my optometrist and he'll do the job? I heard they have to re-shape the glass according to my prescription, but do you know about how much it will cost? I want to save some money by buying just the frame online and then get it shaped according to my prescription if that's possible.
I'd appreciate your answers.
Answers:
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The numbers on the existing frames are 51, the width of the lenses in mm, 18 the width of the bridge (where they cross your nose) in mm; some frames have a 3rd number, usually, 130, 135 or 140, which is the length of the temples in mm. To get glasses on-line, you need a prescription and it must be less than 2 years old to be still valid, you also need your PD which is the distance between your pupils. Sometimes the optician doesn't want to tell the PD because he/she knows that you will get glasses on-line and they will lose business. If they are being a jerk about giving you your PD, you can have a friend measure it with a metric ruler while you look straight ahead. (It is actually easier to measure from the outside edge of one pupil to the inside edge of the other, the line between the pupil and iris is a lot easier to see/measure than trying to determine the center of a black pupil). Note: don't try to measure it yourself using a mirror, you will almost certainly get the wrong number because your eyes will go a little cross-eyed when you try do it yourself. As for the best sites; there are numerous on-line glasses sites, I have no idea which is best. I got nice designer glasses from www.go-optic.com (they had zillions of frames!). I also got spare glasses at www.zennioptical.com (this site has quite inexpensive, non-designer, but still nice frames). I am quite happy with both pairs. but there are many, many other sites. Find a few frames you like and them check the prices on several sites (also check the price of the lenses with whatever options & coatings you want because the place with the cheapest frames might not have the cheapest lenses and thus, might not have the cheapest complete glasses.
The problem with frames found on E-bay is you need to be sure they are suitable for real, prescription lenses, unless the seller will guarantee that this is the case, I would pass. Many of the on-line eyeglasses sites will sell empty frames that you can have lenses put in by a local optician if you want. Usually it is no problem for them to cut lenses to fit frames you supply (most opticians will do this, but you might call and check first, so you don't waste a trip there). There is an on-line site that will put replacement lenses in existing frames: www.replacementlenses.com (I think) but since you are having to buy frames on line, it is probably easier to just have the same on-line place as you bought the frames from put the lenses in for you.
You can't buy glasses online without your prescription, which would look like -1.00 +0.50 x 75. Your PD can be measured just by measuring the distance between your pupils with a ruler. The PD isn't that important when you buy the frames. Its used to center the prescription lenses so that the middle of the prescription is aligned with your pupils. They will do that when you take the frames to the optical store to get your prescription lenses made for the frames. It will definitely save you money to get the frames online. I would go to an optical shop, try on some frames to find then ones you like, then buy those online and take them back to that optical shop to get the lenses put in.