Pinhole Vision Correction Glasses (also called stenopeic glasses or pinhole adjustment glasses) feature a lightweight, comfortable frame with multiple tiny pinholes instead of regular lenses. These glasses help train eye focus and concentration by forcing light through small openings, which reduces the circle of blur on the retina and sharpens vision temporarily—without prescription lenses. They work on the same principle as squinting: the pinholes limit scattered light rays, allowing only focus