TIPS
1. LENS SELECT
1.1 Lens Index
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1.50 Index single-vision lenses are the basic standard lenses. They are recommended for prescriptions with an SPH correction of approximately ±2.00 and below.
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1.56 Index single-vision lenses are are thinner and lighter, recommended for SPH corrections between ±2.25 and ±4.00, CYL corrections of -2.00 and below.
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1.59 Index PolyCarbonate Lenses are made of a special polycarbonate material. They are ideal for everyone with most prescriptions, perfect for children, sports and industrial purposes.
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1.6 Index are super-thin high index lenses, they are excellent choice for people with strong prescriptions with SPH between ±4.25 and ±6.50, CYL corrections between -2.25 and -3.00.
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1.67 Index lenses are even thinner. They are the best option for strong prescriptions with SPH corrections between ±6.75 and ±8.50, CYL corrections between -3.25 and -4.00.
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1.74 Index lenses are extremely thin lenses for prescriptions with SPH corrections around ±8.75 and above, CYL corrections between -4.25 and -6.00.
1.50
1.56
0.00-2.00
2.25-4.00
Lens Index
Sphere Recommended
1.60
4.25-6.50
1.67
6.75-8.50
1.74
above 8.50
1.2 Lens Coating
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All clear single vision lenses of eYangOptical.ca are most popular Hard Multi AR Coating(HMC AR) with UV Protected, Anti-scratch, Anti-reflective. Though Lenses can never be scratch-proof, the scratch-resistant coating does reduce the risk of the lenses getting scratched through daily wear and tear.
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You can add Digital Screen Blue Protection Coating which reduces glare and filters the Harmful Blue Light from digital screens.
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You can also add Easy Clean Coating to wipe and clean the lenses more easily .
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Photochromic Lenses are clear(or nearly clear) indoors and darken to grey or brown automatically when exposed to sunlight.
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Transitions® lenses are adaptive lenses that automatically adjust from clear to dark grey or brown through activation from UV light. Color changes more quickly & more efficiently.
2. Frame Size Select
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If you are currently wearing a pair of glasses, find the size either on one of the temples or on the bridge shown as below.
Lens Width A
Frame Size
Below 49
Small
49-56
Medium
Above 56
Large
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Or measure the width of your head right above your ears. (Use a ruler and a mirror or ask someone to help you. Determine whether the frame is the right size by the table:
Appropriate F-mm
Frame Size
Below 130
Small
125-145
Medium
Above 140
Large
Kids under 6 years old
Y ＜ 6
Kids 6 to 10 years old
Y 6-10
3. About Pupillary Distance(PD)
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Pupillary distance (PD) is the distance measured in millimeters between the centers of the pupils of the eyes. This measurement is different from person to person.The average PD for women is 62mm and for men 64mm. Between 58 and 68 is quite normal. In most cases, you have one PD number, which means your both eyes' PD is the same, the half of that number.
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The easiest way to get this measurement is to ask your optician for it. We also strongly suggest you to get your PD from your optician.
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It is also easy to measure your PD using a simple millimeter ruler and a mirror or with the help of a friend.
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Steps to measure PD
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Place a millimeter ruler directly over the center of your right pupil and keep the ruler is horizontal. Place against forehead for added stability. Stand in front of a mirror, or ask someone else to measure for you.
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Keep looking straight ahead, measure the distance from the center of your right pupil to the center of your left pupil.
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Repeat several times of the measurement process for accuracy, and use the average result for your final measurement.
4. Frequently Asked Questions
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Why I can't order Multi Focal or Progressive Lenses on eYangOptical.ca?
Bifocal, Trifocal, or Progressive Lenses need to determine the Segment Height. This parameter can be measured sitting face to face your optician with the frame you have chosen wearing on your nose, The position will be marked on the demo lenses of the frame so that the accuracy of the parameter can be guaranteed.
As online optical lab based retailer, eYangOptical.ca does not take any risk in not fitting your health condition. So we only offer Single Vision glasses online and promise the quality is strictly according with your prescription submitted.
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How to read my prescription?
When you look at your prescription for eyeglasses, you will see numbers listed under the headings of OD and OS. They are Latin abbreviations: OD (oculus dextrus) means the right eye and OS (oculus sinister) means the left eye.
Sphereis(SPH) is the degree of correction needed to correct your near or distance sightness.
Cylinder (CYL) indicates the lens power needed to correct astigmatism in your eyes.
Axis is the orientation of astigmatism, measured in degrees from 1 to 180. If you do not have astigmatism and do not have a cylinder power on your prescription, you do not have an axis number.
Pupillary Distance (PD) is the distance between the center of one pupil to the center of the other, and is an important parameter for lens customization.
Prism is the amount of prismatic power, used to correct uneven or misaligned eyes. Only a small percentage of eyeglass prescriptions include prism.
ADD. is the number indicates the additive power needed to correct your immediate near vision if your prescription is primarily for distance correction. It is applied to the bottom part of multifocal lenses or progressive lenses to correct presbyopia and will be the same power for both eyes.
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How do I submit my prescription?
After you have put the order, you will be guided to a prescription submitting page with your order number listed below. Fill in the form and click 'submit' icon.
You can also email your prescription at info@eyangoptical.com, juse make sure the order number is indicated in your email.
If you are just buying the frame, you can skip it.
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Can I order more than one frame and how to submit different prescriptions?
Yes, you can order more than one frame at a time.
If the prescription is the same, submit it on the submitting page after the order is put.
If there are different prescriptions, submit them seperately on the submitting page after the order is put. Our customer service will contact you if there's problem in matching prescriptions with frames.
You can also email your prescriptions at info@eyangoptical.com, juse make sure the order number is indicated in your email.
If you are just buying the frames, you can skip it.
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What is the power range of prescriptions can eyangoptical.ca do?
The maximum power of prescription we can fit is: -9.00 to +8.00SPH(sphere) and 0.00 to -4.00 CYL (cylinder).
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Can I use my current frame and get a new pair of lenses from eyangoptical.ca?
Yes, you can! Our lenses replacement service starts from C$40.
Please email us your prescription at info@eyangoptical.com for the price quote and our customer service will contact as soon as possible.
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How long do I wait for my glasses after my order is put?
After you have completed the order, items will arrive in 5-10 business days within Canada, 7-14 business days within US and the rest of the world.
We will contact you the first time if there is some facts that will delay your delivery time.
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How to get a refund or change my prescription that is already submitted?
You have 14 days since the glasses arrive to make an equal exchange or get a return for no reason.
A one-time replacement pair within 6 months is available if there are clear defects in material or craft process.
Product warranty does not cover damage caused by accidents, negligence, or improper care.
To get a refund or replacement as follows:
1. Obtain a Return Lable Email by contacting our Customer Service info@eyangoptical.com
2. Send your glasses back to us with the return lable.
3. Once we receive your delivered items, you will either receive a refund within 48 hours or be sent a replacement.
You can change your prescription before your glasses are sent. Just email us at info@eyangoptical.com with your upddated prescription and order number.
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What is eYangOptical.ca telephone number?
eYangOptical.ca is a 100% internet based company and does not provide phone service.
This is one of the reasons we are able to offer you such reasonable prices.
You can always contact us by email info@eyangoptical.com and we will reply ASAP within 24 hours.
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How can I pay for my order?
eYangOptical.ca accepts various easy payment options:
1. MasterCard or VISA -We use secure SSL encryption to process credit cards.
2. Paypal-Paypal is a secure form of payment by the third party payment processor. Accepts all major credit cards and bank accounts.
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How can I trust that my Payment transaction is safe?
EYangOptical.ca uses a Secure Sockets Layer (SSL) connection during your visiting our site, which keeps your information secure and private. The checkout process is secured by HTTPS(SSL certificate) & TLS (Transport Layer Security) encryption, which is the standard security technology for establishing an encrypted link between a web server and a browser. This link ensures that all data passed between the web server and browsers remain private and secure. TLS is the industry standard and is used by millions of websites in the protection of their online transactions with their customers. EYangOptical.ca does not record customer payment details. All these information is processed in secure servers managed by the third party Company Square or PayPal.
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What if I have further questions?
Please feel free to contact us by email info@eyangoptical.com. Our customer service will answer questions as soon as possible.