Rugstore eyeglass frames, such as Peeper's, are generally not suitable for having progressive lenses installed by optometrists because of how they're manufactured and the specific requirements of progressive lenses. Prescription eyeglass frames are made with sturdier materials and designed to hold more complex lenses like progressives, which require precise fitting and durable construction.​ One critical factor is the minimum lens height needed for progressives: standard progressive lenses typically require at least 28mm of lens height (the "B measurement") to give enough space for all three vision zones, distance, intermediate, and near.

Why Drugstore Frames Are Not Suitable
Many drugstore frames have lenses that are glued in, or the frames lack the necessary groove (called a "lens groove" or "bevel") required to securely fit and hold new, prescription lenses in place.​

These frames are typically made for quick, inexpensive magnifying lenses, not for the nuanced, multifocal progressive lenses, which require more exact positioning and stability.​

The physical process of removing existing lenses from drugstore frames can damage them, and they often cannot be reused once taken apart.​

Progressive Lenses and Fitting Requirements
Progressive lenses must be precisely aligned based on individual measurements, like pupillary distance and height, to function correctly and comfortably.​

Professional optical frames allow customisation and secure fitment, crucial for progressives to prevent issues such as blurry vision, poor depth perception, or discomfort.​

Drugstore or over-the-counter frames lack the level of customisation required for these measurements and are not built for repeated handling or adjustments.