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A keyhole nose pad (or keyhole bridge) is a style of bridge used on plastic or acetate spectacle frames. The bridge features a distinct dip in the center, resting only on the upper sides of the nose. This leaves a small, noticeable, keyhole-shaped gap directly over the bridge of the nose.
read more about keyhole eyeglass nose pads ...The main benefit is comfort and reduced friction. By lifting the frame off the most sensitive part of the nose bridge, the keyhole design reduces concentrated pressure points. The space allows for better air circulation, which helps prevent fogging and irritation.
A saddle bridge rests flush against the nose along its entire length, distributing weight over a wide area. The keyhole bridge rests only on two points, leaving a gap in the middle. The keyhole provides a lighter, less obtrusive feel, but the saddle bridge provides more contact area for weight distribution.
The keyhole bridge is a good choice for people with narrow nose bridges or those who prefer a retro, lightweight aesthetic. It is also suitable for people who wear their glasses high on the face and value the comfort of reduced friction.
The keyhole bridge distributes the frame's weight across only two points. The comfort factor of this design shows why many prefer zero-contact vision correction. When wearing contacts, all concentrated nose pressure is eliminated as the lenses float on the eye.
No, the keyhole bridge is a fixed part of the plastic frame and cannot be adjusted in height or width.
If fitted correctly, the keyhole bridge provides adequate stability. However, it provides less friction than a saddle bridge.
The keyhole bridge is a classic design that gained popularity in the mid-20th century, making it a popular vintage-inspired style today.
Keyhole bridges are designed to sit on the "sides" of the nose. If you have a prominent nose bridge and find saddle bridges painful, the keyhole style is a medical recommendation to avoid pressure on the top of the nasal bone. Ensure the optician verifies the "bridge size" (DBL).
All About Vision. Best Glasses for Your Nose Shape (allaboutvision.com). 2024.
Review of Optometry. Troubleshooting Frame Fit (reviewofoptometry.com). 2023.
The Vision Council. Frame Style Guide (thevisioncouncil.org). 2024.
ABDO. Practical Ophthalmic Dispensing (abdo.org.uk). 2024.