Frame size is determined by the three key measurements found inside the frame arm: lens width (from 31-60mm), bridge width (from 12-31mm), and arm length (from 115-155mm).
Lens height is essential for multifocal prescriptions, such as Progressives, which require a minimum measurement of 28-30mm. They are also recommended for Rx sunglasses.
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- Progressive Eligible
- Sunglasses Eligible
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- Spring Hinges
The Derek Cardigan 7018 eyeglasses are classic and sophisticated. The slightly curved frame features narrow, rectangular lenses giving this retro style a contemporary aesthetic. Flexible spring hinges ensure a comfortable fit on medium to large faces, while classic Derek Cardigan signatures at each temple complete this refined style.
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Bending is better
Spring hinges allow the arm to bend beyond the standard 90-degree angle, so your glasses last longer and fit more comfortably.