• 1. Order grand total over US$69.
    • 2. Calculated automatically without coupon code.
    • 3. Limited to standard shipping.
    • 4. Only for United States/Canada
    Free Shipping Over $69
    • 1. Nearly 70% of American adults experience eye strain, blurred vision, red eyes or migraines due to prolonged use of the digital devices and the exposure to blue light.
    • 2. Blue Light lenses offer the best solution to deal with blue light emissions. The lenses filter the blue light emitted by digital screens, providing comfort to your eyes and protection from harmful rays.
    blue light blocking 50% off
Register
Shipping & Tracking
  • We would like to tell you that the shipping fee for standard shipping is $6.95 for the US and Canada, the shipping fee for business express is $18.95 for the US and Canada.
  • We cooperate with UPS, FEDEX, DHL and so on. We provide the safest transportation service.
  • We do offer standard shipping and express shipping.
  • Normally, it will take 7-15 business days for standard shipping and for business shipping, it will take 5-7 business days.
  • Yes. We offer free standard shipping to US/CA on the condition that your order grand total is over US$69.
  • We would like to tell you that the total time for an order includes the processing time and shipping time. Normally it will take 5-7 business days for customizing your lenses(if you choose tint, progressive lenses and so on), once we finish your order, we will ship it out via the shipping method you chose.
Account
  • We are so sorry to tell you once you register successfully, the email address can’t be changed. Concerning your case, you are advised to register with your new email address.
  • Yes, you can reset your password after you sign in your account, you just need to click the “My account” button, then please click”Account Settings” and you can enter your new password.
  • If you have already registered and forgot your password, you can click “forgot your password” then enter the email address you used to register and you will receive an email about the verification code, you just need to enter it then you can reset a new password.
Order
  • First, please select a frame you like and choose the color, click “Add Lens”
    Next, please select the lens type, enter your prescription and submit it.
    Then, please select the lens function, index and coating.
    Finally, confirm your order information, enter coupon code and check out.
  • From professional eye care center, such as an optician or optometrist. They are required to provide you with your prescription after an eye exam.
  • We strive to process orders as soon as possible. But we will try to accommodate any order changes within 24hours of placement. The best way to get a hold of us is by emailing service@Langlasses.com.
    Please be sure to include your order number, and let us know exactly what changes need to be made. We will make necessary changes for you and will offer updated information.
  • If you enter a wrong prescription, you can contact us and we will change the necessary information for you. You don’t need to cancel your order as a result of wrong information provided.
    If you want to cancel your order, please send email to us about it and include your order number.
  • We would like to tell you that we do offer readers on our web. You just need to click the button"Add lens" then click "Readers",then choose your degree.
Try on
  • Yes, we do offer it. If you want to try on a frame, you just need to click the "Try On"button.
  • We have a virtual try-on system which supports you to try on the glasses frames you choose online, so that you can know how they will look on you.
    Notice: the try-on function is to see how the frame style fits, but it can not tell if the size fits you.
Frame
  • Some frames have a series of numbers printed on the inside of a temple arm (the part that goes behind your ear). The first numbers are typically the manufacturer’s style number and color code. But farther down the temple arm, there may be important numbers that refer to the dimensions of the frame. These numbers are the measurement, in millimeters, of the lens width, nose bridge width, and temple arm length. Often the lens width and nose bridge width are 2-digit numbers separated by a square, and the temple arm length is a 3-digit number in front of or behind the others. Knowing these numbers can help you choose a frame similar in size when shopping.
  • Choosing a suitable frame size is very important when shopping glasses online.
    You can refer to your previous glasses, check the inner temple arm and there may be some numbers there. The first number is lens width, the second is bridge and the third is temple.
    If you don’t find the numbers on the inside of your frame, you can measure them by yourself. And then choose frames with same or similar figures.
  • We need to explain to you that all the frames are the same colors as pictured on our website. Since the brightness and tint density displayed can vary on each monitor for the identical image, even on those hooked up to the same computer, the frame color displayed on the website may not be an exact match to the color you will receive. The pictures of the product are just for references. The real product is prevailing.
Lens & Coating
  • "Index" refers to the refractive quality of the lens, or the degree to which the lens bends light passing through it. And the High-Index lens is applied to strong prescriptions, which can make lenses much thinner than using common Mid-Index lens lens. But the higher index lens only produces a thinner lens if the correction to be placed in is very strong.
  • A lens tint is a permanent color in the lens used for either fashion or as sunglasses. Photochromic lens is darken with exposure to direct sunlight and becomes clear again when removed from the sunlight.
  • Actually “Transitions” is a trade name applied to the generic lens term. What you referred to is photochromic lenses which darken with exposure to direct sunlight and become clear again when removed from the sunlight. 
  • Tint lenses are in permanent color, whether you are indoors or outdoors.
    Photochromic lenses are transparent indoors while outdoors they darken depending on the light.
    Polarized lenses have the same color indoors and outdoors, and the effect is better than tint lenses as they can filter out harmful UV.
  • We do offer No anti-reflective coating, Standard coating, Advanced coating and Ultimate coating.
  • Single Vision lenses are standard prescription eyeglasses. These glasses only have one viewing area throughout the entire lens and the correctional area can be for far distance, mid distance or reading.
    Far distance- If you wear glasses all day and mostly need these glasses to see things in the distance.E.g. For driving.
    Mid distance- If you mostly need these glasses to work before computer or something else at arms length.
    Reading- If you need to read things close to you.Papers, document, etc
  • Bifocal lenses have two points of focus. A small portion of the lens is reserved for the near-vision correction. The rest of the lens is usually for a distance correction.
  • Progressive lenses provide a smooth transition from distance through intermediate to near, with all the in-between corrections included as well.  You can look up to see anything in the distance, look ahead to view your computer in the intermediate zone, and drop your gaze downward to read and do fine work comfortably in the close zone. That is to say, progressive lenses are the closest to how natural vision is that you can get in a pair of prescription eyeglasses. 
  • Polarized lenses are used in sunglasses, to reduce glare from reflective surfaces such as the surface of a lake, the hood of a car. They accomplish this feat through a process called polarization, much like a venetian blind controls sunlight through a window.
  • Tint lenses are colored lenses and opposed to the changeable photochromics, the colors are remains constant at all times. Light tints are used primarily for fashion purposes to enhance a wearer's looks. Darker tints allow the wearer to use the lenses as sunglasses.

    Available colors are listed as below:
  • Photochromic lenses are Light-adjusting lenses that can be clear indoors and progressively darken outside in sunlight. Photochromic lenses darken according to the amount of sunlight the lenses are exposed to. The shade of the lenses is slightly lighter than regular sunglasses and take one minute or two to transition to the darkened shade. Likewise, when moved out of the sun, the lenses take a minute or two to return to clear lenses.
  • We do offer lenses with different inde: 1.49,1.56,1.61,1.67,1.74 and we do offer different lens types: single vision, bifocal, progressive as well as different lens coatings: no anti-reflective coating, standard coating, advanced coating, ultimate coating.
  • All of the lenses have an anti-scratch coating and the coating is free.
    The standard coating is anti-reflective coating.
    The advanced coating has all the properties of a regular anti-scratch & glare coating, plus the added benefit of a water resistant coating that repels dirt and water, and is easier to clean.
    The Ultimate coating has all the properties of a regular anti-scratch & glare coating and hydrophobic coating, plus the added benefit of an oil resistant coating that makes it easier to deal with fingerprints and sweat.
    If you need any coatings, you can choose it when you select lens. Standard coatings are recommended.
  • Our lenses are made of resin, which is lightweight and highly impact-resistant.
  • We would like to tell you that we do process the lenses as you placed, if you choose tint for your order, the lenses are tint lenses but if you don't choose the tint or photochromic lenses, the lenses are clear lenses. Besides, if you want the lenses are the same as the picture on our web, you just need to place an order for frame only which are with non-prescription and original lenses. (For readers, we would like to tell you that the lenses are clear.)
Prescription
  • OD = Oculus Dexter, which refers to the right eye.

    OS = Oculus Sinister, which refers to the left eye.

    Sphere (SPH):
    The term "sphere" is essentially the degree of correction needed to correct your near or farsightedness.

    Cylinder (CYL):
    The number indicates the lens power needed to correct astigmatism in your eyes.

    Axis:
    The axis indicates the orientation of astigmatism, measured in degrees from 1 to 180. The number ranges from 1 to 180, with the number 90 corresponding to the vertical meridian of the eye and 180 corresponding to the horizontal meridian of the eye. If you do not have astigmatism and do not have a cylinder power on your prescription slip, you will not have an axis number, either.

    Add or NV:
    The number associated with either of these terms indicates the additive power needed to correct your immediate near vision if your prescription is primarily for distance correction.

    Pupillary Distance (PD):
    This number indicates the distance from the center of one pupil to the center of the other, and is an important number for lens customization.What is my pupillary distance (PD) and how do I get it?

    Prism:
    A prism number indicates the amount of prismatic power, measured in diopters, needed to compensate for any alignment problems in your eyes.

    Base:
    This will either appear in a column of its own or be included in the prism column. This column indicates the direction of a prism by noting the relative position of its thickest edge.
    If the base is directed upwards, the column will read "BU," "base up" or simply "up." If the base is directed down, it will read "BD," "base down" or "down." If the base is directed toward the wearer's nose, the column will read "BI," "base in" or "in." If the base points away from the wearer's nose and toward the ear, the column will read "BO," "base out" or "out."

  • Contact prescriptions and eyeglasses prescriptions are different and use them interchangeably will result in problems with your glasses. Make sure you have the correct prescription before entering it.
Payment
  • We accept PayPal, MC and Visa as Payment method.
  • We are sorry to tell you that we do not participate in any insurance programs.
  • Our prices are listed in U.S. dollars.
Return & Refund
  • We do offer 30-DAY EXCHAGE & REFUND and 3-MONTH WARRANTY. Please click learn more.
  • We are so sorry that we do not offer the repair service. If your frame is broken and the lenses are complete, you just need to place an order for non-prescription glasses.
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