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Are Contacts The Same Prescription As Glasses

What Are The Side Effects Of Using My Glasses Prescription For Contact Lenses

Why contact lens prescriptions are different to glasses | Optometrist Explains

Ordering the wrong type of contact lenses or the wrong prescription can lead to symptoms such as blurry vision , headache, eye fatigue, and eye pain.1 In the worst-case scenario, contact lenses purchased without a proper prescription and eye examination may lead to eye health complications and potentially lasting damage.2

Need more information about different types of contact lenses? Have a look through our Contact lenses page, or read our article explaining what glasses prescriptions mean. You can also book in online for an eye test at Specsavers.


  • American Academy of Ophthalmology. . Can outdated contact lenses harm your eyes? . Available at: .
  • engör T, Alkibay S, Ermeç Sertolu A, Aydn Kurna S. Survey to Determine Perceptions and Practices in Contact Lens Use and Identify Key Features of Safe Use Education. Turk J Ophthalmol. 2018 48:288294. . Available at: .
  • How Are The Two Types Of Prescriptions Different

    Part of the reason for the differences is that contacts are placed directly on the lens of your eye, while glasses sit about 12 millimeters away. That seemingly minor difference requires a different prescription strength for each type of corrective eyewear.

    Your contact lens fits the size and shape of your eye, so it includes more information about lens curvature and width.

    Here is one example of a glasses prescription :

    Benefits Of Wearing The Right Prescription

    Wearing the right eyeglasses or contact lenses helps you see the world more clearly. When you consistently book eye exams, you keep on top of your eye health. You have an opportunity to discuss changing vision needs.

    But sometimes vision changes between your regular scheduled appointment. Or your eyeglasses break. Or you forget to re-order your contact lenses. So what happens when your prescription is wrong or you borrow someone elses corrective lenses?

    Read Also: What Are The Best Sunglasses

    When Contacts Are The Better Choice

    Contact lenses are a better choice for more active people. This doesnt mean you cant be active if you wear glasses, but contacts make it easy to engage in physical activity at any moment without concern for breaking your glasses.

    Contacts do not interfere with your field of vision as glasses do when they block part of your peripheral vision.

    Many people choose contacts as their preferred eyewear for aesthetic reasons. They prefer how they look without glasses or theyve never worn glasses and the sudden change in their appearance bothers them.

    Contact lenses are also more convenient throughout the day. Contacts require more care and cleaning, but you dont need to worry much about them throughout the day. They dont make your face sweat, they dont fog up, and they dont slip down your nose.

    Daily contact lenses are a convenient way to minimize care and cleaning and provide all the convenience of contacts.

    You Need An Eye Test For Each

    Prescription Eyeglasses &  Contact Lenses

    If you wear glasses and are interested in contact lenses, or the other way around, pop into your local Leightons branch and have an in-depth chat with one of our experts. In the meantime, take a look at this article to help you choose between glasses and contacts. Let your optometrist use their expertise to guide you through the different lens options and find the right contact lens specification for you.

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    What’s The Difference Between A Contact Lens And Glasses Prescription

    Like an eyeglass prescription, a contact lens prescription includes the lens power required to correct your refractive error whether myopia , hyperopia and/or astigmatism.

    But, depending on the degree of your refractive error and the type of contacts prescribed, the powers specified on your contact lens prescription may be significantly different than those on your glasses prescription to give you the best vision possible.

    Also, a contact lens prescription contains additional specifications that are not included on a glasses prescription, and these can be determined only after a comprehensive contact lens exam and fitting. They include:

    You are entitled to a copy of both your glasses and contact lens prescriptions. It is illegal for your doctor to withhold your prescription from you.

    You can request a copy of your glasses prescription at the conclusion of your comprehensive eye exam. But a contact lens prescription cannot be written by your eye doctor and given to you until he or she performs a contact lens fitting or has access to your previous prescription and has evaluated the fit of your current lenses.

    Toric Contact Lenses & Astigmatism

    Toric contact lenses are specially designed to correct vision for people with astigmatism. Some people can counteract their astigmatism with regular contact lenses, but more severe astigmatisms require specialty lenses.

    These lenses help provide clear vision for people with corneal irregularities. People who could benefit from toric lenses may have a particularly unique or steep corneal curvature, which prevents them from wearing regular contact lenses.

    Toric lenses are usually more comfortable for the wearer because they are specially designed for their eyes.

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    Scleral Contact Lenses & Dry Eye

    Dry eye is an increasingly common eye condition that causes your eyes to feel irritated and uncomfortable. If left untreated, dry eye can become so severe that simple tasks like driving become impossible.

    Your eyes should produce good quality tears as necessary to keep your eyes lubricated. When your eyes are not making enough tears or the tears they make are low quality, dry eye symptoms can occur.

    Scleral contact lenses are designed to cover your sclera rather than resting on your cornea. These lenses leave a small space between the lens and your cornea that acts as a fluid reservoir to trap moisture against the eye and keep it hydrated throughout the day.

    Wearing scleral lenses is different from traditional contact lenses. Your optometrist will help you choose the best scleral lens for your eye and show you how to use the lenses properly. Theyll also be able to give you care instructions for your lenses for the best possible outcome.

    You can wear your scleral lenses for up to 12 to 14 hours a day and these lenses typically last 1 to 2 years . Scleral lenses are generally custom-made for your eyes, so you will likely need to go for a fitting appointment before you get your lenses.

    These lenses are also a great option for people who have corneal irregularities, such as keratoconus, as it simulates a smooth ocular surface and improves vision.

    What We Liked About Eyebuydirect

    How prescription glasses are made

    Eyebuydirects collection is huge, which means youll find both a wide range and a lot of variations on similar themes. The search tools let you filter effectively by enough criteria that you can narrow things down quickly.

    We really liked the glasses we got from Eyebuydirect, especially given the inexpensive pricing. The fully specd browline pair we ordered compared very favorably to name-brand versions of the same concept from Ray-Ban and others, with solid build, very clear optics and a wide field of vision in the premium progressive prescription we ordered, and the fit was in order with what wed expected from the online fit tools. A pair of basic Wayfarer-style frames we ordered as readers similarly met our expectations, with quality acetate construction and similarly good optical quality to the pricier pair.

    Basic single-vision prescriptions are very inexpensive , while pricing for a fully loaded pair, before discounts, runs about $400 for house brands and in the $500 to $600 range for branded options like Ray-Ban. This is still very affordable compared to many brick-and-mortar opticians and high-end retailers, where youd spend in the neighborhood of $1,000 for a similarly specd pair but not far off major discount retailers like Costco.

    Two-day delivery is available for a select range of frames, with single-vision prescriptions its about the cheapest way to get a pair of glasses in a hurry. With regular shipping, we got our glasses in nine business days.

    Read Also: Polarized Wayfarer Sunglasses Ray Ban

    Will I Save Money

    That depends. If you shop around online, its very likely that you will save money versus purchasing at your local optician though exactly how much will depend on a few factors.

    If you have a simple prescription single vision, below +/- 4.00 and dont want an ultra-thin lens or special coatings or tints, across the board youll likely spend around $100. Should you need something more complex, youll spend more, though likely less than you would on brand-name pairs at a local optical shop.

    You do give up the benefits that come with in-person fitting, dispensing and adjustments, though these matter less if you have a straightforward single-vision prescription, and depending on your budget it may well be worth spending more to have access to a knowledgeable professional.

    If youre interested in brand names, you should watch for sales, coupons and discount codes as you would with any other online shopping. Over the course of our testing, we were typically able to find discounts of up to 40% off the price of our orders. Many retailers also offer second pairs at a steep discount, so its worth keeping an eye out.

    An open question is insurance, which can cover a significant amount at most brick-and-mortar opticians, narrowing the gap pretty significantly with online offerings. That said, depending on your coverage and where you shop, you might get a break on your online order too. Insurance plans typically cover one pair of glasses per year .

    Are Contact Lenses And Glasses Prescription The Same

    One of the most frequently asked questions is that are contact lenses and glasses prescription the same?Simple, they are not!

    The main reason for this is that glasses prescription are positioned approximately 12 millimeters from your eyes whereas contact lenses sit directly on your eyes. You can compare this to holding a magnifying glass at different distances.

    If you hold the lenses at an arms length and focus on an object, what you see is very different to when you hold it right up to your eye.

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    Is Your Contact Prescription The Same As Your Glasses Prescription

    No, your contact and glasses prescriptions are different. Your optometrist has to factor in different measurements for each type of eyewear, which is why you need a separate contact lens exam to determine your contact lens prescription.

    Your contact prescription will include a base curve and diameter in addition to the power of vision correction needed. These numbers ensure that your contacts fit comfortably and function as they should.

    Knowing how to read your eye prescription will help you to understand these measurements and how they pertain to your eyewear.

    A Huge Range Of Options With In

    Which Type of Glasses Lens is best for Strong Prescriptions?  Jupitoo

    As one of the biggest optical chains in the US, LensCrafters probably needs no introduction. If youve ever purchased glasses, youve probably bought a pair from the Luxottica-owned brand. Its moved into online retail now, providing an overall similar experience to its sibling online-only brand, but with the added bonus of a hybrid approach that takes advantage of its brick-and-mortar locations to get you an exam or a fitting. The site really seems built more as an entry to LensCrafters in-person shopping than a standalone experience .

    What we liked about LensCrafters

    Shopping tools are very complete and usable. The site has a wealth of informational content on pretty much every aspect of eyewear and eye care, along with the full suite of things we like: clear, easy-to-find, complete measurements for each frame virtual try-on tools a tool to mark favorites while shopping for easy comparison and more. And while the company doesnt offer samples for try-on, for many frames it will direct you to a local LensCrafters shop where you can try on in person

    LensCrafters is big on options. As you might expect given how big LensCrafters is, you get a ton of options for lens types, coatings, tints and such. Where some smaller retailers offer two choices of Ray-Ban lens tints, youll find five at LensCrafters.

    What we didnt like about LensCrafters

    Bottom line

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    Are Glasses Prescriptions And Contact Lens Prescriptions The Same

    A glasses prescription is not the same as a contact lens prescription. Glasses sit slightly away from your eyes and contact lenses sit directly over your eye, so two different tests and measurements are required. Depending on the refractive error, the strength of lens required to correct it and the type of contact lens you need, the parameters specified on your glasses prescription may be significantly different from those on your contact lenses prescription.You may also find that there will be a cylinder and axis value on your glasses prescription, whilst it wont be prescribed for your contact lenses.

    Pros And Cons Of Contact Lenses

    Contact lenses eliminate many of the cons of wearing glasses. They are placed directly on your eyeballs, so you dont need to worry about them falling off or affecting your face overall. But like glasses, as great as contacts are, they arent perfect.

    Pros of contacts:

    • Dont affect how you look
    • Dont make your face sweat or move around on your face
    • Dont have to worry about fogging
    • Make physical activity and exercise easy and convenient
    • Wearing them while sleeping if you have extended wear contacts

    Cons of contacts:

    • Higher risk of infection than with glasses
    • Can be uncomfortable or impossible to wear if you have dry eyes or other eye conditions
    • Require more upkeep, cleaning, and maintenance than glasses

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    Other Options For Figuring Out Your Eyeglass Prescription

    Just remember that you can request your prescription details from the office where you last had an eye exam. Theyre required to share a copy with you.

    If youre looking for other options to find out your prescription based on existing glasses, there are other scanning apps like the one GlassesUSA offers.

    • Liingo RX Reader:Liingo Eyewear also has an app that you can use to get the prescription of your current glasses by downloading the app, calibrating hardware, and scanning your lenses.
    • GlassesOn app: 6over6 offers its GlassesOn app to take measurements similar to GlassesUSA Prescription Scanner to get PD and lens details.
    • Lens Scanner App:SmartBuyGlasses, an eyeglass retailer, partnered with 6over6 to offer its own version of an eyeglass scanning app.

    What the Prescription Scanner app isnt for

    The app doesnt accommodate:

    • strong or weak prescriptions

    When To Update Your Prescription

    Glasses and Contacts Prescription – What is The Difference? | SportRx

    Prescription lenses have an expiration date. Eyeglasses prescriptions typically expire between 12 years from the day of your eye exam. Contact lenses are out-of-date after one year. The timeframe is shorter for contact lenses because there are more significant risks requiring more frequent eye health evaluations.

    There are 2 reasons for the expiration date. First, your eyes change over time, resulting in a prescription change. Second, its also crucial to routinely evaluate eye health. Even if prescription power is unchanged, there can be other changes. Eye exams help diagnose and manage eye diseases, including conditions that may not affect vision in the early stages of development.

    Eye exams are recommended every 2 years for low-risk adults and annually for low-risk school-age children. Patients with a higher risk should schedule comprehensive eye exams more frequently, as recommended by their eye doctor. Then, your optometrist can determine if you need an updated prescription at your regular eye exam.

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    About Prescription Contact Lenses

    Prescription contact lenses contain the following features:

    • Base Curve It is based on the shape of your cornea and it produces a perfect contact lens fitting that is not too loose or too tight.
    • Diameter This element specifies the overall size of the lens and determines how the lens fits. The diameter of a contact lens can range anywhere between 13.5mm to 14.5mm.
    • Expiration date Normally, permanent and customized contact lenses can last up to one year. Once it expires, best to revisit your preferred optician for a full eye check-up. This will ensure that your eyes are in good shape before you purchase brand new lenses.
    • Material The particular brand and material must be specified in the contact lenses prescription details. Materials used come with a specific degree of oxygen permeability, also known as breathability. This is important if you plan to extend the usage of your contact lens.

    Are Contact Lens And Eyeglass Prescriptions The Same

    Contact lens prescriptions and eyeglass prescriptions are not the same. They are significantly different because eyeglass lenses are positioned approximately 12 millimeters from your eyes, whereas contact lenses rest directly on the surface of your eyes.

    If you want to wear both contact lenses and eyeglasses, you will need two separate prescriptions.

    SHOPPING FOR CONTACTS OR GLASSES? Find an eyewear store near you.

    Recommended Reading: How To Measure Pupil Distance For Glasses

    What Is The Difference Between A Contact Lens Prescription And Eyeglasses


    Before you make your choice of corrective eyewear, we recommend knowing what the difference is between a contact lens prescription and eyeglasses. Contact lenses go on your eyes, while eyeglasses go over them.

    In addition to how the eyewear fits, the two types of prescription lenses vary in the materials used to make them. Your contacts may be made with various materials, including silicone hydrogel, while your eyeglasses may have titanium frames and polycarbonate lenses.

    For those who need vision correction, you have many options. For instance, you may enjoy a great pair of eyeglasses in stylish frames, or you can opt for contact lenses if you wish to hide the fact that you need corrective eyewear.

    But what is the difference between a contact lens prescription and eyeglasses? Lets find out.

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