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Bridge height is the vertical measurement of the frame bridge. It determines where the frame will sit vertically on the wearer's face relative to the pupils. This measurement is important for making sure the center of the lens is aligned with the center of the eye.
read more about bridge height in eyewear ...Bridge height is typically measured from the bottom of the frame's brow line to the lowest point of the frame where it rests on the nose. This measurement is crucial for proper optical alignment and comfort.
If the bridge height is too high, the frames will sit too far above the nose, causing them to slip down. If the bridge height is too low, the frames may rest uncomfortably on the cheeks or obstruct the vision. The correct height ensures the frame is stable and the weight is distributed properly.
The optical center of the lens must be directly in front of the wearer's pupil for clear, accurate vision. If the bridge height is wrong, the lens correction will be off-center, leading to blurriness or eye strain.
Even though you wear contacts, your backup glasses require a perfect fit. Correct bridge height is necessary to avoid distortion. A well-fitted backup frame means you get stable, comfortable vision correction immediately when your contacts need to be removed.
No. Bridge size is the horizontal width of the nose piece. Bridge height is the vertical placement of the bridge on the face.
Yes, on metal frames, an optician can adjust the nose pad arms to change the bridge height slightly. On plastic frames, the height is fixed.
Bridge height is crucial for bifocals and progressives because it determines the correct placement of the reading segment of the lens.
If you find yourself tilting your head back to see through your progressive lenses, your bridge height may be too low. Visit an optician for a frame adjustment; even a 2mm shift in bridge height can dramatically improve your reading clarity and neck comfort.
AOA. Clinical Guidelines: Fitting Spectacles (aoa.org). 2024.
Review of Optometry. The Art of the Frame Adjustment (reviewofoptometry.com). 2023.
College of Optometrists. Dispensing Spectacle Lenses (college-optometrists.org). 2024.
ABDO. Practical Dispensing for Presbyopes (abdo.org.uk). 2024.