Prescription Lens Guide
Learn about the lenses you can choose for your new pair of eyeglasses, from prescription types to lens materials and coatings, we got it all covered for you!
Made in Canada
Our HD lenses are made in Canada with the highest quality standards and fitted to your prescription by a certified optician in our Canadian optical lab.
Lens Coatings
Included with every lens at no additional cost.
Scratch-Resistant Treatment
The scratch-resistant treatment improves scratch-resistance, protecting your lenses from minor (micro) scratches caused by normal wear and tear which extends the life of your lenses and helps ensure clearer vision.
Anti-Reflective Treatment
The anti-reflective treatment is a thin multilayer coating that eliminates reflections from the front and back of the lens for superior lens transparency which helps eliminate glare, reduce eyestrain and enhance vision.
UV Protection
The UV protection treatment is an invisible coating that blocks 100% of the UVA and UVB rays to protect your eyes from the sun’s harmful rays.
Prescriptions Types
Single Vision & Reading Lenses
Single Vision
Single vision lenses have the same prescription throughout their entire surface. They correct one field of vision – near, intermediate or distance.
Reading Lenses
Reading lenses offer simple magnification, providing near vision correction in strengths ranging from +0.75 to +3.50. They are available with or without prescription.
Included in the price of the frame.
Progressive Lenses
Progressive lenses contain three vision zones in one lens, providing seamless correction for distance, intermediate and near vision all at once with no lines like bifocals or trifocals.
Our digital free-form progressive lenses provide ultra-clear HD vision at all distances such as driving, computer screen and reading so you don’t have to switch between multiple pairs. If you have an “ADD” value on your prescription, then progressive lenses are for you.
This lens option comes at an additional cost.
Blue Light Blocking Lenses
Blue light blocking lenses are clear non-prescription lenses that contain a blue light filter to block out the blue light emitted by the sun, artificial lights and digital screens such as smartphones, TVs, tablets and computers.
Our high-quality blue light blocking lenses offer protection against UVA and UVB rays and shield the eyes from harmful blue light emitted by sunlight, artificial lights and digital devices to enhance the vision, reduce glare and eye fatigue.
Included in the price of the frame.
Lens Types
Standard HD Lens
A lightweight organic or polycarbonate lens designed for low to medium prescriptions that range from plano to +/- 3.00. Includes scratch-resistant and anti-reflective coatings.
Included in the price of the frame.
Thin HD Lens
A lightweight and very thin organic lens of 1.67 high-index designed for medium to strong prescriptions that range from +/- 3.00 to +/-6.00. They are up to 30% thinner than our Standard HD Lens. Includes scratch-resistant and anti-reflective coatings.
This lens option comes at an additional cost.
Ultra Thin HD Lens
A lightweight and ultra-thin organic lens of 1.74 very high-index designed for especially strong prescriptions that range from +/- 6.00 or higher. They are up to 40% thinner than our Standard HD Lens. Includes scratch-resistant and anti-reflective coatings.
This lens option comes at an additional cost.
Additional Lens Features
Blue Light Blocking Filter
While being exposed to blue light emitted from the sun and the constant use of digital devices and screens in our everyday lives, we become more prone to eye fatigue, headaches, migraines and even insomnia.
Our clear blue light filter is a special coating that offers digital protection and shields the eyes from the harmful blue light emitted by the sun, artificial lights and digital devices and screens. This filter can be added to any prescription lens of your choice.
This lens option comes at an additional cost.
Photochromic (Light-Responsive)
This is a light-responsive lens that transitions from fully clear to a darker tint (choice of grey or brown) when exposed to UV rays, offering 100% protection against UVA and UVB rays, preventing eye strain and reducing glare in the sun. The lenses are tinted in the sunlight and fully clear indoors and at night.
This lens option comes at an additional cost.
Still Looking For The Perfect Pair?
Start browsing our eyeglasses frames, then select your lenses.
Common Questions
What prescription type is right for me?
Finding the appropriate prescription type for you depends on your visual needs. In order to determine which prescription type you need, you can take a look at the prescription given to you by your optometrist.
If you have values indicated in the SPH, CYL or AXIS fields, and no value indicated in the ADD field, then single vision lenses are recommended for you.
If you have values indicated in the SPH, CYL or AXIS fields, and a value indicated in the ADD fields, then progressive lenses are recommended for you.
If your optometrist has recommended reading eyeglasses, he may have given you a prescription or simply recommended a certain strength ranging from +0.75 to +3.50. If you have a prescription for simple reading glasses, then you will find identical positive (+) values indicated in the SPH fields only.
If you’re still unsure which lens type is best for you, no worries. We’re here to help! You can send us your prescription at customercare@kraywoods.com and one of our certified opticians will review it and advise which prescription type is right for you!
What lens type is right for me?
Finding the appropriate lens type for you depends on the strength of your prescription. For every lens type, we have indicated the average prescription strength that it's recommended for.
If you’re still unsure which lens type is best for you, no worries. We’re here to help! You can send us your prescription at customercare@kraywoods.com and one of our certified opticians will review it and advise which lenses type is right for you!
How do I read my presription?
Prescription:
The most common format will have clearly printed fields for OD, OS, SPH, CYL, AXIS, ADD, etc.; values are usually entered with computer, but may be handwritten by your optometrist. The Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign, so make sure to fill in the exact value with the sign preceding it when ordering your lenses.
If you have values indicated in the SPH, CYL or AXIS fields, and no value indicated in the ADD field, then single vision lenses are recommended for you.
If you have values indicated in the SPH, CYL or AXIS fields, and a value indicated in the ADD fields, then progressive lenses are recommended for you.
Pupillary Distance (PD):
You may or may not find your PD indicated on the prescription. If a value is indicated in the PD field, it can be written in different ways: 62 (Single PD) or 33/31 (Dual PD). When purchasing your eyeglasses, you will have the choice to enter either a Single PD value or a Dual PD value.
How can I know my pupillary distance (PD) measurement?
Your eye doctor will usually measure your PD during an eye exam and indicate the value on your prescription. If a value is indicated in the PD field, it can be written in different ways: 62 (Single PD) or 33/31 (Dual PD).
However, if it was not indicated on your prescription, you can easily measure it yourself. You can find a detailed step by step guide on how to measure your PD in the Frame Size Guide.
Can I use a prescription that's over 2 years old?
The prescription that you receive from your eye doctor will include an expiration date. The expiration date is the last day that you can use the prescription to buy new eyeglasses or replacement lenses. Eyeglass lens prescriptions typically are valid for up to two years. If your prescription is near the expiration date, we strongly recommend scheduling a new eye exam in order to get an updated prescription.
What type of frame is best for progressive lenses?
Since progressive lenses contain three vision zones in one lens, providing seamless correction for distance, intermediate and near vision all at once, it is important to consider lens height when choosing a frame. For progressive prescription lenses, the lens height of your frame must be at least 30 mm in order to ensure optimal vision.
How long does it take to adapt to new eyeglasses?
When putting on a new pair of prescription eyeglasses, you may experience some temporary symptoms such as eye strain, dizziness, distortion, depth perception issues, discomfort using stairs, mild headaches or difficulty focusing at certain distances.
With single vision prescription glasses, it will possibly take 3 to 5 days to adjust to a typical or usual change in prescription. With progressive prescription glasses, the adjustment period may last up to 3 weeks in some of the cases. If there are major changes in your prescription, or if you're going from single vision lenses to progressive lenses in your glasses, you should allow a period of about 2 to 3 weeks to get used to your new pair of glasses.
If you haven't adapted to your new eyeglasses within the first 3 weeks, make sure to contact us at customercare@kraywoods.com and one of our certified opticians will be happy to assist you.
How can I help my eyes adjust to new eyeglasses?
There are several tips that can help you adapt to a new pair of prescription eyeglasses more quickly:
- Wear them as your primary pair and make sure to wear them for several consecutive hours during the day. If you try and ease your way in by changing them with your previous eyeglasses, it will take much longer to adapt to your new eyeglasses.
- Make sure you have a comfortable frame that is adjusted well for your face. If your feel that your frame is somewhat uncomfortable or the fit is not optimal, visit your local optician in order to get them correctly adjusted.
- If you have progressive eyeglasses, you’ll need to find and use new areas in your lenses instead of using whatever space is most convenient. There are three main vision zones in a progressive lens: distance, intermediate, and near. Test the different vision zones in your lenses by looking through different parts of the lens without moving or tilting your head. This will allow you to understand where your vision zones are in the lenses and use them properly.
If you haven't adapted to your new eyeglasses after applying the tips above, make sure to contact us at customercare@kraywoods.com and one of our certified opticians will be happy to assist you.
Prescription Lens Guide
Learn about the lenses you can choose for your new pair of eyeglasses, from prescription types to lens materials and coatings, we got it all covered for you!
Made in Canada
Our HD lenses are made in Canada with the highest quality standards and fitted to your prescription by a certified optician in our optical lab.
Lens Coatings
Included with every lens at no additional cost.
Scratch-Resistant Treatment
The scratch-resistant treatment improves scratch-resistance, protecting your lenses from minor (micro) scratches caused by normal wear and tear which extends the life of your lenses and helps ensure clearer vision.
Anti-Reflective Treatment
The anti-reflective treatment is a thin multilayer coating that eliminates reflections from the front and back of the lens for superior lens transparency which helps eliminate glare, reduce eyestrain and enhance vision.
UV Protection
The UV protection treatment is an invisible coating that blocks 100% of the UVA and UVB rays to protect your eyes from the sun’s harmful rays.
Prescriptions Types
Single Vision & Reading Lenses
Single Vision
Single vision lenses have the same prescription throughout their entire surface. They correct one field of vision – near, intermediate or distance.
Included in the price of the frame.
Reading Lenses
Reading lenses offer simple magnification, providing near vision correction in strengths ranging from +0.75 to +3.50. They are available with or without prescription.
Included in the price of the frame.
Progressive Lenses
Progressive lenses contain three vision zones in one lens, providing seamless correction for distance, intermediate and near vision all at once with no lines like bifocals or trifocals.
Our digital free-form progressive lenses provide ultra-clear HD vision at all distances such as driving, computer screen and reading so you don’t have to switch between multiple pairs. If you have an “ADD” value on your prescription, then progressive lenses are for you.
This lens option comes at an additional cost.
Blue Light Blocking Lenses
Blue light blocking lenses are clear non-prescription lenses that contain a blue light filter to block out the blue light emitted by the sun, artificial lights and digital screens such as smartphones, TVs, tablets and computers.
Our high-quality blue light blocking lenses offer protection against UVA and UVB rays and shield the eyes from harmful blue light emitted by sunlight, artificial lights and digital devices to enhance the vision, reduce glare and eye fatigue.
This lens option comes at an additional cost.
Lens Types
Standard HD Lens
A lightweight organic or polycarbonate lens designed for low to medium prescriptions that range from plano to +/- 3.00. Includes scratch-resistant and anti-reflective coatings.
Included in the price of the frame.
Thin HD Lens
A lightweight and very thin organic lens of 1.67 high-index designed for medium to strong prescriptions that range from +/- 3.00 to +/-6.00. They are up to 30% thinner than our Standard HD Lens. Includes scratch-resistant and anti-reflective coatings..
This lens option costs an additional $80
Ultra Thin HD Lens
A lightweight and ultra-thin organic lens of 1.74 very high-index designed for especially strong prescriptions that range from +/- 6.00 or higher. They are up to 40% thinner than our Standard HD Lens. Includes scratch-resistant and anti-reflective coatings.
This lens option costs an additional $130
Additional Features
Blue Light Blocking Filter
While being exposed to blue light emitted from the sun and the constant use of digital devices and screens in our everyday lives, we become more prone to eye fatigue, headaches and migraines and even insomnia.
Our clear blue light filter is a special coating that offers digital protection and shields the eyes from the harmful blue light emitted by the sun, artificial lights and digital devices and screens. This filter can be added to any prescription lens of your choice.
This lens option comes at an additional cost.
Photochromic (Light-Responsive)
While being exposed to blue light emitted from the sun and the constant use of digital devices and screens in our everyday lives, we become more prone to eye fatigue, headaches and migraines and even insomnia.
Our clear blue light filter is a special coating that offers digital protection and shields the eyes from the harmful blue light emitted by the sun, artificial lights and digital devices and screens. This filter can be added to any prescription lens of your choice.
This lens option comes at an additional cost.
Still Looking For The Perfect Pair?
Start browsing all eyeglasses frames, then select your lenses.
Common Questions
What prescription type is right for me?
Finding the appropriate prescription type for you depends on your visual needs. In order to determine which prescription type you need, you can take a look at the prescription given to you by your optometrist.
If you have values indicated in the SPH, CYL or AXIS fields, and no value indicated in the ADD field, then single vision lenses are recommended for you.
If you have values indicated in the SPH, CYL or AXIS fields, and a value indicated in the ADD fields, then progressive lenses are recommended for you.
If your optometrist has recommended reading eyeglasses, he may have given you a prescription or simply recommended a certain strength ranging from +0.75 to +3.50. If you have a prescription for simple reading glasses, then you will find identical positive (+) values indicated in the SPH fields only.
If you’re still unsure which lens type is best for you, no worries. We’re here to help! You can send us your prescription at customercare@kraywoods.com and one of our certified opticians will review it and advise which prescription type is right for you!
What lens type is right for me?
Finding the appropriate lens type for you depends on the strength of your prescription. For every lens type, we have indicated the average prescription strength that it's recommended for.
If you’re still unsure which lens type is best for you, no worries. We’re here to help! You can send us your prescription at customercare@kraywoods.com and one of our certified opticians will review it and advise which lenses type is right for you!
How do I read my presription?
Prescription:
This is the most common format will have clearly printed fields for OD, OS, SPH, CYL, AXIS, ADD, etc.; values are usually entered with computer, but may be handwritten by your optometrist. The Sphere (SPH) and Cylinder (CYL) always have a (+) or (-) sign, so make sure to fill in the exact value with the sign preceding it when ordering your lenses.
If you have values indicated in the SPH, CYL or AXIS fields, and no value indicated in the ADD field, then single vision lenses are recommended for you.
If you have values indicated in the SPH, CYL or AXIS fields, and a value indicated in the ADD fields, then progressive lenses are recommended for you.
Pupillary Distance:
You may or may not find your PD indicated on the prescription. If a value is indicated in the PD field, it can be written in different ways: 62 (Single PD) or 33/31 (Dual PD). When purchasing your eyeglasses, you will have the choice to enter either a Single PD value or a Dual PD value.
How can I know my PD measurement?
Your eye doctor will usually measure your PD during an eye exam and indicate the value on your prescription. If a value is indicated in the PD field, it can be written in different ways: 62 (Single PD) or 33/31 (Dual PD).
However, if it was not indicated on your prescription, you can easily measure it yourself. You can find a detailed step by step guide on how to measure your PD in the Frame Size Guide.
Can I use a prescription that's over 2 years old?
The prescription that you receive from your eye doctor will include an expiration date. The expiration date is the last day that you can use the prescription to buy new eyeglasses or replacement lenses. Eyeglass lens prescriptions typically are valid for up to two years. If your prescription is near the expiration date, we strongly recommend scheduling a new eye exam in order to get an updated prescription.
What type of frame is best for progressive lenses?
Since progressive lenses contain three vision zones in one lens, providing seamless correction for distance, intermediate and near vision all at once, it is important to consider lens height when choosing a frame. For progressive prescription lenses, the lens height of your frame must be at least 30 mm in order to ensure optimal vision.
How long does it take to adapt to new eyeglasses?
When putting on a new pair of prescription eyeglasses, you may experience some temporary symptoms such as eye strain, dizziness, distortion, depth perception issues, discomfort using stairs, mild headaches or difficulty focusing at certain distances.
With single vision prescription glasses, it will possibly take 3 to 3 days to adjust to a typical or usual change in prescription. With progressive prescription glasses, the adjustment period may last up to 3 weeks in some of the cases. If there are major changes in your prescription, or if you're going from single vision lenses to progressive lenses in your glasses, you should allow a period of about 2 to 3 weeks to get used to your new pair of glasses.
If you haven't adapted to your new eyeglasses within the first 3 weeks, make sure to contact us at customercare@kraywoods.com and one of our certified opticians will be happy to assist you.
How can I help my eyes adjust to new eyeglasses?
There are several tips that can help you adapt to a new pair of prescription eyeglasses more quickly:
- Wear them as your primary pair and make sure to wear them for several consecutive hours during the day. If you try and ease your way in by changing them with your previous eyeglasses, it will take much longer to adapt to your new eyeglasses.
- Make sure you have a comfortable frame that is adjusted well for your face. If your feel that your frame is somewhat uncomfortable or the fit is not optimal, visit your local optician in order to get them correctly adjusted.
- If you have progressive eyeglasses, you’ll need to find and use new areas in your lenses instead of using whatever space is most convenient. There are three main vision zones in a progressive lens: distance, intermediate, and near. Test the different vision zones in your lenses by looking through different parts of the lens without moving or tilting your head. This will allow you to understand where your vision zones are in the lenses and use them properly.
If you haven't adapted to your new eyeglasses after applying the tips above, make sure to contact us at customercare@kraywoods.com and one of our certified opticians will be happy to assist you.