Progressive Lens Trial Frame Guide | Generated by AI
“渐进试戴架” in English is usually called a progressive lens trial frame or progressive trial frame set.
It is a tool used in optometry and optical shops to let patients try different progressive lenses (multifocal lenses for presbyopia or myopia management). Instead of making a custom pair of glasses immediately, the optician inserts trial lenses into this frame so you can test whether the prescription, corridor length, and comfort are suitable before ordering real glasses.
What “瞳距 / Tongju” Means
- “瞳距” (pupil distance, abbreviated PD) is the distance between the centers of your two pupils, measured in millimeters.
- It’s very important because progressive lenses need the optical center aligned with your pupils for comfort and clear vision.
- That’s why you see numbers like 52, 54, 58, up to 70 mm. These are different interpupillary distances.
-
For example:
- 52 mm = small face / narrow PD
- 62 mm = average adult
- 70 mm = very wide PD
How to Buy Wisely
-
Know your PD (Pupil Distance):
- You can measure it at an optician, or some apps and rulers can help.
- Buy a frame (or lens set) that includes your PD size or is adjustable.
-
Choose Adjustable Frames if Possible:
- Some trial frames let you adjust PD precisely (e.g., 52–70 mm range).
- This is more flexible than buying a fixed-PD frame.
-
Lens Size & Corridor:
- Progressive lenses differ in corridor length (short corridor for small frames, long corridor for big frames).
- If you plan to test for reading/computer vs. driving, tell the optician so they pick the right sample lenses.
-
Quality & Comfort:
- Cheap plastic trial frames can be uncomfortable and imprecise.
- For real testing, opticians use metal or professional trial frames that allow angle/height adjustments.
-
Where to Buy:
- On Amazon, Walmart, or optical suppliers, you’ll usually search for “progressive trial lens set”, “trial frame progressive lenses”, or “optometry trial frame PD adjustable”.
👉 In summary: The number (52–70) is your interpupillary distance. The best choice is an adjustable trial frame that covers your PD, rather than buying a fixed one that might not fit you.
Do you want me to suggest the exact keywords/products on Amazon/Walmart that match this?