Guides & Tips
How To Fill Out The Prescription
Entering your prescription correctly is one of the most important steps when ordering eyewear online. Below are common prescription types and simple examples to help you fill in your details accurately for ORVIOS glasses.
Single Vision Prescription
If your prescription looks like the example below, simply select the Single Vision option and enter the values exactly as shown.
Single Vision Prescription with Prism
If your prescription includes prism correction, enter the prism values together with the standard SPH, CYL and AXIS information.
Progressive Prescription
Progressive prescriptions normally include an ADD value. Enter each value exactly as it appears on your prescription.
Reading Prescription
If your prescription is for reading glasses, use the example below to understand how the information should be entered.
Other Information You Might Need
OD refers to the right eye, OS refers to the left eye, and PD is your pupillary distance. Always enter the values exactly as shown on your prescription.
How To Measure Your PD
Pupillary Distance (PD) is the distance between the centers of your pupils, measured in millimeters. An accurate PD helps place the optical center of your lenses correctly.
Why It Matters
Accurate PD helps improve lens centering and provides a more comfortable visual experience.
Single vs. Dual PD
Some prescriptions provide one PD number while others provide separate right and left eye measurements.
How to Measure Your PD at Home
Measure 2–3 times and use the average for the most consistent result.
Step 1
Stand about 8 inches (20 cm) from a mirror. Keep your head level and look straight ahead.
Step 2
Close your right eye and align the 0 mark on the ruler with the center of your left pupil.
Step 3
Close your left eye and read the millimeter number aligned with the center of your right pupil.
Step 4
If you need dual PD, measure each eye separately and enter both measurements.
Single vs. Dual PD (OD/OS)
| Type | What It Looks Like | When To Use |
|---|---|---|
| Single PD | One number, e.g. 63mm | When checkout asks for one PD value |
| Dual PD | Two numbers, e.g. 31mm / 32mm | When checkout asks for right / left PD |
Can You Measure PD Online?
Option 1
Use a photo toolKeep your face centered and look directly into the camera.
Option 2
Use a rulerMeasure your PD manually using a mirror and millimeter ruler.
Option 3
Ask a friendA second person can make it easier to keep your head still.
FAQ
My PD measurements change each time. What should I do?
Measure 2–3 times and use the average. Keep your head straight and the ruler level.
Is PD different for reading vs distance?
Some prescriptions may provide a separate near PD. Use the PD intended for the type of lenses you are ordering.
What if my prescription doesn’t include PD?
You can measure it using the steps above or request the measurement from your eye care provider.
How To Measure Your Frame Size
Choosing the right frame size is essential for a comfortable fit. You can check the dimensions of your current glasses or compare your measurements with the guide below.
Frame Size Guide
Measurements printed inside the temple arm may vary slightly depending on the frame design. Comparing the overall frame width of glasses that already fit you well is often the easiest method.
| Size | From hinge to hinge (mm) |
|---|---|
| Narrow | 125mm – 128mm |
| Medium | 129mm – 132mm |
| Wide | 133mm – 136mm |
| Extra Wide | 137mm – 140mm |
Frame Width
Measure horizontally from hinge to hinge to determine the total width of the frame.
Lens Width
Lens width is the horizontal measurement of one lens at its widest point.
Lens Height
Lens height is measured vertically at the tallest part of the lens.
Bridge Width
Bridge width is the distance between the lenses at the narrowest point of the frame.
Temple Length
Temple length measures the arm of the frame including the bend that rests behind your ear.
Lenses & Coatings
ORVIOS offers practical everyday lens options designed to support clarity, comfort and durability.
Single-Vision Lenses
Single-vision lenses contain one prescription power throughout the entire lens.
- For Distance: Designed for clear distance vision.
- For Intermediate: Suitable for computer and mid-range tasks.
- For Reading: Designed for books, phones and close-up work.
Progressive Lenses
Progressive lenses provide distance, intermediate and near correction in a single lens without visible dividing lines.
KR Resin Material
Impact Resistant
KR resin material provides practical durability for everyday eyewear.
Improved Clarity
Designed to provide dependable optical clarity for comfortable everyday vision.
Functional Coatings
Anti-Scratch
Anti-scratch coating increases durability, keeping lenses clear and resistant to everyday wear.
UV Protection
UV protection coating blocks harmful rays, helping protect your eyes from long-term damage indoors and outdoors.
Anti-Reflective
Anti-reflective coating reduces glare, improving clarity and comfort, especially for screen use or bright conditions.
Blue-Light Blocking Lenses
ORVIOS blue-light blocking lenses are designed to help manage blue-light exposure from digital screens while supporting comfortable everyday viewing.
Blue-Light Is Everywhere Today
Digital devices are now part of everyday life, making prolonged screen exposure increasingly common.
Blue-Light Causes Diffusion & Flickering
Shorter wavelength blue light scatters more easily and may contribute to glare and visual discomfort during extended screen sessions.
Blue-Light Blocking Lenses Help Reduce Exposure
Blue-light filtering technology helps manage selected wavelengths reaching the eye during digital device use.
Benefits of ORVIOS Blue-Light Blocking Lenses
- UV Protection: Helps manage harmful ultraviolet exposure.
- Reduced Glare: Supports better visual comfort while viewing screens.
- Screen Comfort: Designed for long periods of digital device use.
How To Adjust Your Eyeglasses
Frames may occasionally sit too high, too low, or slightly uneven. Small adjustments can sometimes improve the fit.
1. If Your Glasses Are Sitting Too Low on Your Nose
For Wire Frame Glasses
Gently push the nose pads inward using your thumbs until the frame sits more comfortably.
For Plastic Frame Glasses
Warm the temple ends slightly and gently adjust the curve behind the ears.
2. If Your Glasses Are Sitting Too High on Your Nose
For Wire Frame Glasses
Gently push the nose pads outward to allow the frame to sit slightly lower.
For Plastic Frame Glasses
Warm the temple ends carefully and make a small adjustment to reduce pressure behind the ears.
3. If Your Glasses Are Crooked or Tilted
Place your glasses upside down on a flat surface to check whether the temple arms rest evenly.
For Wire Frame Glasses
Make a small adjustment to the temple arm until the frame sits more evenly.
For Plastic Frame Glasses
Carefully warm the higher temple arm and make a small downward adjustment.