FAQs - Frequently Asked Questions

Look inside the temple of a pair that fits you: three numbers, something like 52-18-140. That's lens width, bridge width and temple length in millimetres. Order the same numbers, give or take two. No old pair? Measure across your face at the temples and across the bridge of your nose, or phone us and we'll size the frame for you. Most adults land between 50 and 54 eye, 16 and 22 bridge, 135 and 150 temple.

Round face, angular frame. Square face, round or oval frame. Oval face, whatever you like. Heart-shaped, something light with the weight at the bottom. Long face, a deeper frame. Triangular, a frame heavier at the top, a cat-eye or a browline. It's styling advice, nothing to do with your prescription, and our face-shape collections are sorted this way.

52 is the lens width, 18 the gap between the lenses at the bridge, 140 the length of the temple, all in millimetres. Some frames add a fourth number for lens height. One or two millimetres either way from a pair that fits is fine; three or more and you'll feel it.

Adjustable wire nose pads (usually metal or titanium) can be pinched in or widened to fit any bridge, good for low bridges or fine-tuning. Molded acetate bridges can't be adjusted and must match your anatomy out of the box. If glasses slide down your nose, prefer adjustable pads or an Asian Fit design.

One of the first things to consider when purchasing prescription sunglasses is your intended purpose. You may start narrowing down the pool of frames by figuring out how and when you'll be wearing them. "Will I be using it every day?" "Do I need this frame to play a certain sport?" "Does it require a safety rating for on-the-job?" are some things to consider. After analyzing your needs and intended use, you should have a more precise notion of what sort of frame is ideal for you.

Our online store comprises all sorts of frames that can accommodate your prescriptions. People with higher prescriptions should go for frames with a flat lens. Feel free to reach out to our customer service for those who are unsure, and we will help you find the right pair of glasses.

Most of them. For very strong powers we use 1.74 high-index to keep the lens thin. The limit is the frame, not the lab: a deep sport wrap or a small rimless mount can't take what a full-rim acetate frame can. An optician looks at every order before we cut, and we'll call if the frame and prescription don't suit each other.

Strong prescriptions, especially strong minus, look best in smaller full-rim frames with a flat curve. Wraps and rimless mounts have limits. Each product page lists the range, and if you've picked a frame that won't carry your prescription, we contact you before cutting anything.

Usually it's your PD against the frame's width. If your eyes are set close and the frame is wide, the optical centres end up too far apart, which induces prism and gives you a headache. The checkout flags it and an optician suggests a narrower frame or a lens design that compensates.

Have someone hold a millimetre ruler across your brow and read the distance between your pupils while you look past them into the distance. A friend gets it right more often than a mirror. There's a guide on the site, and free phone apps do a fair job. For progressives the PD has to be right, so if you're unsure, ask your optometrist to write it on the prescription or call us.

OD is your right eye, OS your left. SPH is the main power, minus for short sight, plus for long. CYL and AXIS describe astigmatism. ADD is the extra near power for bifocals or progressives. PD is the distance between your pupils in millimetres. That's everything we need.

If it's still valid, which in most states means one to two years old, yes. After that you need a new exam. Even inside the window, a recent prescription is worth having; small changes are enough to make new glasses uncomfortable.

The majority of sunglasses may be made into prescription sunglasses. There are specific exclusions, which are defined by the frame and the prescription of the individual. That's why we provide our prescription-wearing customers with the best opportunity to fulfill their vision needs in the designs they prefer. Every frame we sell at heavyglare.com has been hand-picked by our team of experts to meet Rx's needs best and match your lifestyle. We're confident that you're already one step closer to finding your perfect pair of prescription sunglasses, thanks to top brands like Ray-Ban, Wiley X, and 7eye by Panoptx.

The eyeglass prescriptions are typically written in a grid with scientific terms, abbreviations, and numbers. Remember, the further the numbers are from zero, the more correction you need. A+ symbolizes farsightedness and, A- which represents nearsightedness. Other abbreviations are stated below: OD – Oculus Dexter, which means right eye. OS – Oculus Sinister, which means left eye. SPH (Sphere) – Eyeglass prescription power. CYL (Cylinder) – Astigmatism is an imperfection in the curvature of the eye. AXIS – Degree and direction of your astigmatism need correction. ADD – Add Power is the magnifying power in the lower part of a multi-focal lens.

PD stands for Pupillary Distance. It is the distance between your pupils which is measured in millimeters. It is needed to input your prescription accurately. It is necessary to determine the Pupillary Distance (PD) before your prescription lenses are cut into the shape of your frames. This measurement is then used to align the optical center of each lens with your pupils to provide the best possible visual clarity for each user. In general, PD measurements fall in the range of 48mm to 73mm. The most common measurements are between 58mm and 68mm.

Glass offers superior clarity and scratch resistance, the benchmark for brands like Costa and Serengeti, but it's heavier, can shatter, and is limited in tint and coating options. Polycarbonate and Trivex are safer, lighter, and more all-round. We usually recommend glass only for non-sport, everyday driving use.

That's the glass, not the lens. Tempered car windows have stresses in them that polarized light shows up as coloured patterns. It's harmless and doesn't affect the prescription or the UV protection.

Yes, as a coating or built into the lens material, on single vision, progressives, readers, tinted and photochromic lenses, in any index. On progressives we prefer the coating so it doesn't touch the corridor design. Adds two or three days and roughly $20 to $50.

Almost any plastic lens, CR-39, polycarbonate, Trivex or high-index, in almost any colour and depth. Two exceptions: photochromic lenses, which already change colour, and some 1.74 high-index that takes tint slowly. Glass we can't tint here; it comes tinted from the factory.

Standard house lenses include a basic hard coat against scratches; top-end anti-reflective is an upgrade. We strongly recommend AR to reduce glare from screens, headlights, and overhead lighting, especially for night driving and computer use. Higher-end AR often bundles hydrophobic and oleophobic layers.

On sunglasses, the reflection you notice is the one off the inside of the lens: sunlight from behind you bouncing into your eye. Back-surface AR kills that, and the reflection of your own eye, for less money than coating both sides. Both-sides AR only matters on clear lenses worn at night.

Yes, flash or full mirror in silver, gold, blue, red and more, over most tinted prescription lenses. A mirror bounces bright light away without making the lens as dark as a heavy tint. It adds a touch of thickness, and on glass it's a factory order. Best over polarized.

Solid is the same darkness top to bottom. Gradient is dark up top and lighter below, so you look at the road through the dark part and the dashboard through the light part. Both come in any colour; gradient usually costs no extra.

Yes: Transitions XTRActive Polarized, Oakley Prizm Photochromic and a few others do both in prescription. They cost more and they're the best outdoor sport lens we sell.

UV radiationis highly damaging to our eyes. The 'aging' damage is caused by UVA, whereas the 'burning' damage is caused by UVB. Sunglasses with a deep black tint may not always have or offer UV protection. The UV rating is generally marked on the (Plano) glasses and informs you about their protective qualities. The best sunglasses have a UV400 rating and have been proven to block out 99-100% UVA and UVB radiation. Even with your sunglasses on, you should never gaze directly into the sun.

A digital prescription lens from Heavyglare Eyewear is made utilizing the latest in direct digital surfacing processes, so you can be confident you're receiving the best. It's one of the most exciting advances in modern personal optics: digital surfacing prescription lenses.

When using standard lenses, the peripheral portions of the lenses become fuzzy or blurry. A higher visual acuity is achieved by wearing digitally surfaced sunglasses lenses. A considerably bigger viewing area is possible with digitally surfaced sunglass lenses since they are milled from behind. In this way, the lenses thickness is kept at the rear rather than in the front.

Digitally surfaced lenses utilize the latest technologies to create a lens with an aspheric/atoric backside. In other words, the lens's curvature rate varies from the lens's center outward to compensate for the change in distance and angle between your eye and various spots on it, maximizing the prescription across the lens. Unlike standard progressives, these lenses have a gradual insertion of a multi-focal lens on the rear of the lens. We are putting the reading addition closer to the eye, allowing for a broader range of usable viewing angles. Specific versions go one step further and customize your eye's distance from far vision to close vision based on the frame specifications. Wrapped frames may be fitted with stronger prescriptions than ever before, helping single-vision and progressive wearers alike. Using this new technique, we can now produce lenses with a.01 diopter tolerance, compared to.12 diopters in the past.

Use a microfiber cloth (never shirt, paper towels, or tissues). Rinse dust off with water before wiping, store in a case, and avoid leaving glasses in hot cars (heat damages coatings). Higher-end AR + hydrophobic coatings dramatically reduce scratch risk.

Non-prescription orders ship in one to three business days, about two expedited. Prescription eyewear takes 10 to 14 business days, most of it lens work. International delivery runs 7 to 21 business days depending on where you are. You get a tracking number the day it ships.

Type it into the form on the product page or upload a photo of it; either works. If your prescription doesn't list a PD, measure it (see the question above) or send us a photo of yourself holding a card to your forehead and we'll measure it.

Yes, by appointment: 14055 Grand Ave, Suite G, Burnsville, MN 55337. Fittings, adjustments and same-day pickup. Call 651-209-7999 or 888-548-0558 to book.

Visa, Mastercard, American Express, Discover, PayPal, Apple Pay, Google Pay, Shop Pay, Affirm, CareCredit, and HSA or FSA cards. No cash, cheques or wire transfers for online orders.

On prescription frames and lenses. Ask us for an itemised receipt with frame and lens costs separated.

Most frames have a Virtual Try-On button that puts the frame on your face through the webcam. It's good for ruling shapes in or out. It doesn't replace a fitting, and we still need a real PD for the lenses.

One point per dollar, and 100 points is $5 off. Refer a friend and you both get $20 off when their first order ships. Sign up at checkout or in your account; it's free.

It depends on the brand: most give one or two years against manufacturing defects, a few give a lifetime. None cover scratches, wear or accidents. To claim, send us your order number and photos of the problem; for the brands we still carry, we take it up with the manufacturer for you.

Send it back unused and we'll refund or exchange it, no questions asked; the details and time limits are on our shipping and returns page. Prescription lenses are made for you, so we'd rather help you choose the right frame first: call us with your measurements before ordering if you're unsure.

The maker no longer produces it, so what we have in stock is all there will be. It's a normal, new frame, sold with full lenses and our usual return terms; we just can't reorder a colour or size once it's gone.

10% off for students, active and retired military, first responders, teachers and healthcare workers, verified through ID.me at checkout. Not combinable with other promotions.

Affirm and CareCredit on orders over $200. Affirm splits it into four interest-free payments; CareCredit offers longer terms, often 6, 12 or 18 months deferred interest. Both at checkout, subject to approval.

Daily Deal is one product a day at a special price, in limited quantity, until it's gone. Sale items are marked down from list price, final sale, not combinable with other promotions, and we don't apply the discount retroactively.

While glasses may give some protection against COVID-19, the shielded region of the eye is the only protected area. The virus can still enter your eyes through the exposed sides, tops, and bottoms of your glass. According to CDC (Centers for Disease Control and Prevention), you should take all necessary steps to avoid touching your eyes. The Ziena eyeglasses became the top brand for people working in the medical care industry. They have a magnetic eye-cup acting as a moisture seal protecting your eyes, keeping airflow and the Covid-19 away from your eyes.

Absolutely! We encourage people to wear prescription sunglasses while driving during the day. If you are driving at night, you should consider a transitions lens that lightens to a clear transparent lens early or late at night. Even if you're not driving, prescription sunglasses might come in useful. Rx sunglasses will improve your vision, protect you from dangerous UV radiation, and shield you from intense solar reflections that might cause you to lose focus while on the road.

Prescription sunglasses should not be worn when wearing prescription contact lenses. Prescription contacts already function to improve your vision. As a result, you may get headaches, eye strain, or even vision loss. If you decide to wear contact lenses, we recommend investing in a pair of high-quality non-prescription sunglasses or safety glasses.

Clinical data does not support the idea of damaging your eyes by staring through glasses with an incorrect prescription or pupillary distance configuration. As a result, some people may suffer from headaches, dizziness, double vision, or vertigo (particularly those with more significant corrections). These consequences might be harmful if you're driving, using machinery, or otherwise relying on your spectacles for your safety or the safety of other people. With a new pair of prescription eyeglasses or prescription, you may encounter some of these side effects. Acclimation periods depend on the individual. A first-time progressive wearer may need up to three weeks to adjust. But usually, it will take less than a day. It would be best to start wearing your glasses with the new prescription first thing in the morning. Your eyes get tired and are accustomed to your old prescription.

At Heavyglare Eyewear, we do sell safety goggles and safety glasses. Depending on your work, there are many different types of safety glasses available.

You can bring in your current prescription to have it filled at our opticians; however, we do not provide eye examinations.

Phone 651-209-7999 or 888-548-0558, Monday to Friday, 9 to 6 Eastern. Live chat on heavyglare.com. Email info@heavyglare.com, answered within a business day. Post: 14055 Grand Ave, Suite G, Burnsville, MN 55337. Have your order number handy for anything about an order or a prescription.