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Frequently Asked Questions

How do I read my prescription?

Eyeglass prescriptions may be written in different ways, though most are either printed or handwritten in horizontal rows. The first row is the prescription for the right eye (OD), and the second row is for the left eye (OS). Within each of these rows are three values: Sphere (SPH), Cylinder (CYL), and Axis. The SPH number corrects for nearsighted [indicated with a minus (-)] or farsighted [indicated with a plus (+)] vision.
The CYL number and AXIS number correct for astigmatism. You may also have another field labeled as ADD which corrects for the reading power used in a bifocal or progressive lens. Lastly, eyeglass prescriptions sometimes include the pupillary distance (PD) measurement, which is the distance between your pupils. PD is needed to determine where the optical center of the lens will be for clear, accurate vision. If your prescription does not include your PD, you can measure it yourself with our guide here.
An eyeglass prescription will usually expire in 1-2 years, depending on which state you received your eye exam.

Can you fill my glasses prescription?

Sure. If you have a prescription for corrective prisms, you can click on the "ADD LENS" box on our website's product purchase page. We need you to fill out or upload your prescription information to help you get the right glasses.

What is my pupillary distance (PD) and how do I get it?

Pupillary distance, or PD, refers to the distance in millimeters between the center of one pupil to the center of the other. Having a correct PD on your vision prescription ensures that you’re looking through the ideal spot in your lenses. The average adult's PD is between 54-74 mm; kids' are between 43-58 mm.
It’s fairly simple to measure your PD— all you need is a mirror and a ruler. Once you have what you need, follow the steps below: Step 1: Stand about 8 inch away from a mirror, hold your ruler in one hand. Look straight ahead into the mirror and position the ruler up against your eyebrows.
Step 2: Starting with the right eye, Close your right eye, then line up the ruler so that 0mm is in the middle your left pupil. Step 3: Look straight ahead again and then open your right eye and close your left eye.
Step 4: Read the mm line that lines up with the centre of your right pupil, this measurement is your PD. Measure your PD 3-4 times at least to ensure it's accurate.

What if I have an astigmatism?

Most people have astigmatism. The most common treatments for astigmatism are eyeglasses or contact lenses. You can turn to an eye doctor who will provide you with a prescription for corrective lenses.
If you have astigmatism, we can get you a pair of glasses to correct it.

Do you offer bifocal or progressive lenses?

Certainly! With regard to bifocal glasses, we provide not only bifocal reading glasses, but also bifocal reading sunglasses. And progressive lenses are also provided for those who have a prescription on multiple viewing distances.

Can I use my contact lens prescription to order glasses?

Definitely not! If you currently wear contact lenses, and are thinking of switching to glasses, you may have assumed that your contact lens prescription would simply carry over to your glasses.
Unfortunately that's not the case; the two prescriptions are different because of the distance the lenses sit from your eyes.

What do the Lens Index numbers mean?

Lens index is a number that describes how thick or thin your lenses are. The higher a lens' index is, the thinner it becomes. Higher prescriptions require higher index lenses, while lower prescriptions require lower index lenses.
High index lenses are thinner, more powerful lenses. They're lightweight and stylish, but are mostly reserved for those with higher vision correction needs. While most prescriptions are compatible with more than one specific index, it's up to you to decide which one fits your personal needs!

How do I get thinner lenses?

If you want thin lenses, the best way to achieve it is to get high index lens material.We have high index plastic 1.67\1.71\1.74 to choose from. You can see it when you add the lens.

What are clear lenses?

“Clear lenses” describes lenses that do not have any kind of prescription associated with them. Glasses with clear lenses might also be called “plano” or “fake” glasses. If you were to set a pair of clear-lensed glasses next to a pair of prescription eyeglasses, you likely would not be able to tell the difference between them unless the prescription lenses were particularly strong.
Clear-lensed glasses can be used as an accessory or as a means of protection. For instance, if you have perfect vision, but you have trouble with glare when driving at night, you would buy glasses with clear lenses and anti-reflective coating to reduce glare.

What are blue light blocking lenses?

Blue light blocking lenses have filters that block or absorb blue light, and in some cases UV light, from getting through. That means if you use these glasses when looking at a screen, especially after dark, they can help reduce exposure to blue light waves that can keep you awake.
Blue-light-blocking filter technology works by either reflecting or absorbing blue light. Lenses with a blue-light-reflecting coating can appear bluish, whereas blue-light-absorbing lenses feature a yellow or amber embedded tint.
Unlike reflective lenses, which can only block around 10% of blue light, most blue-light-absorbing lenses (the ones that look yellow or amber) filter at least 35% of blue light. The more blue light a lens blocks, the more orange it appears. Some lenses block up to 98% of blue light, but they can turn your entire world reddish-brown like a sepia-toned print.

What are photochromic lenses?

Photochromic lenses are lenses that stay transparent indoors, but darken when exposed to ultraviolet light from the sun. Essentially, they provide the benefits of glasses and sunglasses in a single frame.
They also go by many other names, including light-adaptive lenses, variable tint lenses, light intelligent lenses, and even “reactolights.” When we’re not using their scientific name, we prefer the term light-responsive lenses, because it neatly encapsulates exactly what these lenses do: they respond automatically to UV light.
If you can’t remember these terms, though, “lens that changes in the sun” usually gets the point across.

What are Polarized sunglasses lenses?

Polarized sunglasses lenses are treated with a chemical that filters out light. However, the filter is applied vertically, so vertical light can pass through, but horizontal light cannot.
Think of it this way: imagine a picket fence with an inch between each slat. You could easily slide a popsicle stick between the slats if you hold it vertically. But if you turn the popsicle stick sideways so it’s horizontal, it can’t fit between the slats of the fence.
That is the general idea behind polarized sunglasses lenses. Some vertical light can pass through the filter, but horizontal light, or glare, is unable to make it through.

What frame style is best for my face shape?

Once you determine your face's shape, you'll want to decide which frame complements it the best. Here are the best fits for each type:
Round face: Aim for rectangular frames with bold angular lines. In turn, these can make your features look sharper.
Oval face: Oval faces are more versatile. Wide frames with a strong bridge enhance your facial features.
Heart-shaped face: Find frames that toe the line between balancing a narrow chin and a larger forehead for a more symmetrical look. Frames with bottom-heavy lines and are slightly wider than your forehead will also help you achieve this.
Square face: Rounder frames soften the angles of the face. If paired with a lens that is slightly wider than your cheekbones, you'll create more symmetry in the face.
Diamond face: Cat-eye and oval eyeglasses enhance your cheekbones.
Of course, these are just our suggestions.

What frame material is right for me?

Choosing the optimal frame material depends on your desired features.
The following categories are provided in EFE for your choice:
Plastics (Acetate, TR90, Polycarbonate, Cellulose Propionate, Other Plastic)
Metals (Titanium, Stainless Steel, Other Metals)
Mixed Materials (Acetate & Metals, TR & Metals, Polycarbonate & Metals, Cellulose Propionate & Metals)

Full-rim, half-rim, or rimless?

Full-rim glasses, especially in the nerd-chic look, are very popular. They are generally more durable than half-rim or rimless frames.
Half-rim frames are great for people with slim faces. They show more of your face than full-rim frames, and are more durable than rimless glasses.
Rimless glasses are great for people who will treat their glasses delicately, and who want their glasses to be practically invisible on their face.

What can I do if my frames don't fit perfectly?

New glasses often need minor tweaks to fit your face right. It’s best to have an optician fine-tune the glasses for you.

Why is it important to wear eye protection during sports?

Recreation and sports activity are responsible for thousands of eye injuries every year. Approximately 90% of all eye injuries can be easily avoided if wearing appropriate eye protection.

What sports can I use these Sport glasses for?

They are also great for outdoor activities such as cycling, skating and running, as well as for active youth or adults who may need eyewear that offers additional strength, padding and protection.

Can I get prescription in these Sport glasses?

Of course! Prescription sports glasses are available and can be customized to suit your vision. They are specifically designed for those who need vision correction while engaged in sports and outdoor activities.. Whether you are nearsighted, farsighted or astigmatic, you can have easy access to these glasses in varieties of designs and styles at EFE.

What lenses are suitable for Sport glasses?

Sports lenses should be scratch-resistant, anti-reflective, and tinted for best performance and safety.Almost all of EFE's lenses are suitable for sports glasses.

What type of lenses do you offer for Sport glasses?

For sports glasses, we offer a wide range of lenses, including clear lenses, single-vision lenses, bifocal lenses, progressive lenses, polarized lenses, photochromic lenses, blue light blocking lenses, etc.

What is Quantum glasses?

EFE's Quantum Glasses are designed for those who spend prolonged periods viewing digital screens, offering a comprehensive upgrade from traditional blue light-blocking glasses. They not only alleviate digital eye fatigue and reduce the risk of eye-related ailments like traditional blue light glasses but also protect the eyes from dryness. Additionally, these glasses help suppress prescription changes, beautify the eyes, diminish dark circles, and inhibit bacterial growth. The lenses feature an anti-reflective coating and undergo physical optimization, reducing reflections on the lenses for clearer vision.

What can Quantum glasses bring to you?

EFE Quantum glasses have the following functions:
1.Anti-fatigue, helps inhibit prescription increase
2. Promote blood circulation and diminish dark circles,beautify the eyes
3.Inhibits bacterial growth
4.Equipped with disinfection and deodorization functions
5.Blue light protection

What bacteria can Quantum glasses inhibit?

Quantum glasses exhibits antibacterial effects, primarily inhibiting the growth of bacteria such as Escherichia coli, Salmonella, Staphylococcus aureus, Candida albicans, and Klebsiella pneumoniae.

How to get one price for 3 pairs of readers?

EFE offers various types of lenses, including Fully Magnified, Bifocal, Block Blue Light, Multifocal lenses for reading glasses. Additionally, EFE has launched a special promotion. When you visit the homepage and click on the reading glasses section, you can choose any 3 different styles, with varying functionalities and prescription strengths for reading glasses. The prices are only $12.99, $24.99, $44.99, or $64.99. You have the option to purchase our recommended combinations, or you can freely mix and match frames and lenses according to your preferences.

Why choose EFE's reading glasses?

EFE's reading glasses have different types,including regular readers, blue light, bifocal glasses, bifocal sunglasses and multifocal glasses. You can pick ANY 3 pairs at one price. EFE reading glasses can suppress prescription changes, promote blood circulation,reduce dark circles,beautify the eyes, and inhibit bacterial growth.

How do I determine what reading glasses power I need?

Here are the steps to help you find the right reading glasses power:
1.The most accurate way to determine your reading glasses power is by visiting an optometrist. They can conduct a comprehensive eye examination to assess your vision and provide a precise prescription.
2.If you already have a prescription for reading glasses, you can use that information.
3.You can also use an online reading glasses test to help determine your reading glasses power.

How do I order single vision reading glasses?

Ordering reading glasses through EFE is easy! Once you have selected a frame, click “Add Lens” and follow the below steps:
1. First, indicate that you would like reading glasses by selecting “Single vision” from the Prescription Type drop-down.
2. Next, you’ll need to input a Near Single or Dual PD (pupillary distance) under the Pupillary Distance dropdown. For a Single PD, if you were only given one PD measurement, it is most likely for distance so you will need to subtract 3 to calculate your near single PD. If you were given a dual PD, two numbers - one for the right and left eye, you’ll need to subtract 1.5mm from each number to calculate the near dual PD. Ex. If given PD= 63mm then Near PD= 60mm.
3. The last step is to enter the reading prescription for the right eye and left eye. If your doctor didn’t write out a separate reading prescription then you’ll need to calculate it yourself. You can do this by adding the ADD value to the SPH value and keeping the remaining values the same, as in the example below:

Can I order bifocals that are computer distance on top and reading on bottom?

You bet you can! Divide the NV-ADD in half. Add one of the halves to your SPHs. Leave the other half in the NV-ADD. This creates computer vision in the top of your lens, and reading vision in the bottom!

What type of sunglass do you offer?

We have different types of sunglasses:
1.UV Protection:
We have aviator sunglass/browline sunglasses/cat-eye sunglasses/geometric sunglasses/oval sunglasses/rectangle sunglasses/round sunglasses/square glasses/sports sunglasses/oversized sunglasses.
2.Photochromic Lenses:
Photochromic or transition lenses automatically adjust their darkness based on the level of sunlight. They become darker in bright conditions and lighter indoors, providing versatility in various environments.
Almost all frames on the EFE can be fitted with sunglasses with this lenses.

What is the best color for sunglasses?

The best color for sunglasses depends on various factors, including the specific conditions in which you'll be wearing them and your personal preferences. :
Here is a brief overview of the different lens colors offered by EFE and their associated benefits::
Advantages: True color perception, reduced brightness without altering color, suitable for various light conditions. Best For: General outdoor activities, especially in bright sunlight.:
Advantages: Enhanced contrast and depth perception, good visibility in varying light conditions. Best For: Driving, sports, and activities in variable light conditions.:
Advantages: Good contrast, minimized color distortion, suitable for bright light conditions. Best For: Golfing, tennis, and other outdoor activities in bright sunlight.:
Advantages: Improved contrast in low-light conditions, enhanced depth perception, reduced blue light. Best For: Overcast days, low-light conditions, and indoor activities.:
Advantages: Enhanced contrast in low-light conditions, reduced eye strain, soothing effect. Best For: Overcast days, skiing, and other snow sports.:
Advantages: Fashionable and stylish, glare reduction, good contrast.:
Best For: Fashion and casual wear, less specific to sports or activities.:
Advantages: Reflects light away, reduces glare, adds a stylish look.:
Best For: Outdoor activities in bright sunlight, especially water sports and skiing.

Can I order clip-ons for any frame?

We have separately sold clip-on sunglasses that can be used with most of our eyeglasses. You can check availability by visiting
Please refer to the size information within the link for individual clip-on sunglasses to determine if they are suitable for your frames.

Can I try on glasses before I buy?

With our 3D Virtual Try-On tool, you can try on the glaases before check out. Please go to a certain product page and click the TRY ON button on the right top of the picture.

How to do 3D virtual try on?

Click the TRY ON button, and turn on the camera. The frame would automatically show up on your face.

Are my try-on images and videos private?

Yes. We will not use or distribute any images or videos that you upload to our Virtual Try-On tools.

What do I need to place an order?

Your prescription, your PD, and a frame you have selected on our website.

What is included in the price of the glasses?

The frame, the lenses, a protective case, and a microfiber cleaning cloth.

Can I order more than one pair of glasses per order?

Yes, you can order as many pairs of glasses as you'd like! After adding one pair of glasses to your cart, click on another frame you like and order the next pair. Repeat this process until you have ordered all the glasses you want. Shipping costs will be calculated based on the weight and volume of the glasses, so the more you buy, the more cost-effective the shipping will be.

Is it required that all the glasses on the order have the same prescription?

Absolutely not! You can order different pairs of glasses for your whole family on one order, with all different prescriptions.

Are your prices listed in international currencies?

Our prices are listed in U.S. dollars.

What forms of payment do you accept?

We accept payments through PayPal, Klarna, and Stripe.

When do you charge my credit card?

When you click the button labeled Pay Now.

Do you accept insurance?

We do not accept insurance. However, some insurance companies may accept a copy of the invoice for reimbursement. Please verify with your insurance company. If they accept an invoice copy, you can request an electronic copy by emailing to our Customer Service department.

Do you provide itemized receipts?

Of course, the detailed receipt will be sent to your email.

How Tax is calculated?

The products sold on do not include taxes. You can calculate and report taxes based on the tax policies applicable in your location.

How much is shipping? When can I expect my glasses to arrive?

We currently use two courier services: USPS and DHL.
The standard shipping fee for USPS is $6.99, with an estimated delivery time of approximately 12-16 business days.
For DHL, the standard shipping fee is $20.99, and the estimated delivery time is around 5-7 business days.

I just placed several orders. Can I pay only one shipping charge?

We will automatically merge orders based on the following conditions:
1. If multiple orders are for custom eyeglasses and are placed within 48 hours, they will be automatically combined.
2. If multiple orders include both in-stock and custom items, we will typically ship them separately unless you provide specific instructions in the order notes.
3. If multiple orders consist entirely of in-stock items and are placed within 24 hours, they will be automatically combined.
4. If multiple orders include out-of-stock products, we will prioritize shipping the items that are in stock first.

How do I track my package?

You will receive a shipping confirmation email that will include a tracking number and tracking link of your specific shipper.
Additionally, You can track your package directly on the homepage in the upper right corner under 'Order Tracking.

What countries do you ship to?

Currently, our primary shipping destinations include the United States and Canada. Additionally, we ship to other countries, including the United Kingdom, Australia, United Arab Emirates, Italy, France, Germany, Spain, Netherlands Antilles, South Africa, Sweden, Belgium, Denmark, Austria, Luxembourg, Poland, Portugal, Czech Republic, Ireland, Slovakia, and New Zealand. We will continue to expand our global market.

What do I do if my package was damaged?

You can contact us at, our dedicated Customer Service Team will assist you with your request.

What should I do if my package is lost during delivery?

You can contact us at, our dedicated Customer Service Team will assist you with your request.

What if I need to change or cancel my order?

You can visit your order history to more details or cancel the order. Or you can contact us at, our dedicated Customer Service Team will assist you with your request.

Can I return or exchange the item if I am not satisfied with it?

"I'm sorry, but it's not possible.
Due to the unique nature of custom eyeglasses, unless the glasses has quality issues, you can contact our professional customer service team at to address the matter.
In other cases, we do not provide returns or refunds without valid reasons."

Tracking shows that my package has been delivered, but it is not here. What should I do?

You can check the waybill number in the order information on the platform, and query on the official website of the carrier express company through the waybill number.
If you haven't received your package, your order may be in the process of being delivered.
For inquiries, please contact our staff to inquire for you.

How do I know if my order has been shipped?

After you complete the payment, you will receive an order confirmation email from EFE Glass, which means that the goods you ordered have been processed and entered into our delivery system.
Due to the highly customized processing of the lenses of glasses, the orders cover the world.
We generally complete the processing and synchronize the information of the logistics carrier within 3-4 working days.
At that time, you can check the detailed delivery information in [My Order].

Do you ship to military addresses (APO/FPO)?

If you choose USPS standard shipping, you can ship to military addresses (APO/FPO). Other shipping methods are not currently supported.

I just placed an order and need to make a change. how do I do it?

Since the lenses of glasses are highly customized, the processing time is generally 48 hours. When your order status is not yet shipped, you have 48 hours to modify or edit your order information. Please modify it in order preparation, or contact us directly to modify it for you.

What is your return policy?

If there is a problem with the quality of the glasses and you want to return them, you can contact our professional customer service team to resolve the matter.

Do you have a warranty?

We promise a warranty period of 365 days.

If I sent my glasses back. What is next?

After you contact the customer service and return it, our customer service will arrange the refund and notify you by email after the check by our warehouse staff.

Can I put my refund on a different credit card than I used on the order?

I'm sorry, you can't.

What can I do if my frames don't fit perfectly?

New glasses often need minor tweaks to fit your face right. It’s best to have an optician fine-tune the glasses for you, but you can also make adjustments yourself with our How to Adjust Your Glasses guide.

How do I adapt to my new glasses?

New glasses may leave you feeling a bit off-balance, so gradually increase your wear time until you fully adapt. Avoid switching back and forth between glasses, as it will take longer to adapt. It can take a few days to adapt to single-vision lenses and 2-3 weeks for progressive or bifocal lenses. If you’re still having vision issues after the adaptation period, consult your eye doctor.

How do I care for my new glasses?

1. Hold your glasses properly
2. Use a microfiber cloth
3. Use a cleaning solution
4. Let your glasses air dry