4 Things You Need to Know About Pupillary Distance
Got your eye on a pair of ANRRI blue light glasses? Stylish, comfortable, effective – excellent choice all round. If you wear prescription lenses, we can even add your prescription to your blue light glasses, making them the perfect allrounder to see you through the day (pun intended). One thing we’ll definitely need from you – in addition to your actual prescription – is your pupillary distance. This will ensure we can make you prescription blue light glasses that fit like a glove and work most effectively.
Wondering what on earth pupillary distance is? And why it’s so important? And even how to measure it? Here’s everything you need to know…
1. What is pupillary distance?
Simply put, pupillary distance (or PD for short) is a fancy way to say “the distance between your pupils”. And, just in case you need a helpful reminder, pupils are those dark circles in the middle of your eye that change size in different lighting.
2. Why do we need to know your pupillary distance?
By providing us with your pupillary distance, which you can either find on your prescription or measure yourself, we can ensure the center of your lenses lines up exactly with the center of your eyes. If your lenses aren’t lined up as accurately as possible, you might find instead of helping, your glasses end up causing a range of problems. We’re talking blurriness, headaches, double vision and nausea. Yep, all the things you’re trying to avoid by getting blue light glasses in the first place. So, by providing us with an accurate PD measurement, we can prevent all these issues and give you the best possible vision.
3. How do you find pupillary distance on your prescription?
Optometrists measure your PD using a specific device or certain techniques that allow for the most accurate measurement, however not all of them record it on your written prescription. So, when you next visit the optometrist, be sure to ask them to include your pupillary distance. When you’re looking at your prescription, you’ll see plenty of references and terms that might not make a lot of sense to you – things like sphere, axis, ADD and numbers listed under letters like “OU”, “OS” and “OD”. Don’t worry about these things looking like a foreign language (technically some of them are, since they’re abbreviations for Latin words). All you need to look for is the PD, which will be listed as either one or two numbers depending on whether you have a single vision or bifocal prescription. There might also be two numbers depending on how your optometrist measured your pupillary distance. For instance, if they’ve measured binocular PD (i.e. the distance between both pupils), you’ll have one number, but if they’ve measured monocular PD (i.e. the distance from your pupil to the center of your face), you’ll have two numbers – one for each eye. Generally, monocular PD is used if your eyes aren’t exactly symmetrical.
If your optometrist didn’t record your PD on your prescription the last time you got your eyes tested, you could try popping in to your local optometrist and asking them to measure it for you. A lot of optometry practices are happy to provide this service for free or for a nominal fee.
4. What is the normal pupillary distance range?
If you’re measuring your PD on your own, one way to make sure you’ve done it correctly is to check that your measurements fall within normal range. So, what’s normal? For adults, the typical pupillary distance is between 54 and 74 mm. For kids, a normal PD range is between 41 and 55 mm. Keep in mind these are just averages, but if your pupillary distance is somewhere between 41 and 80 mm, chances are you’ve measured yours correctly.
If you’ve got any questions about ordering your ANRRI glasses or still aren’t sure what pupillary distance is all about and how to measure it, feel free to get in touch. Our friendly team is always happy to help.
Feel free to browse through our range of premium quality and stylish blue light glasses here. Our blue light glasses are super lightweight and our specially curated selection is designed to suit all tastes. Add your chosen glasses to your shopping cart, follow the prompts to give us your prescription and PD, (We will use simple steps to measure your PD after you place an prescription glasses order) complete the order and get ready to say goodbye to digital eyestrain for good.