Achieving natural eye and lens interaction based eyeglasses optical fit through a parametric customization approach

Eyeglasses are widely used to correct refractive errors, but optical fit evaluation usually emphasizes lens design alone and mainly assumes uniform use of the lens aperture. This can increase design complexity and cost while overlooking how the eye interacts with the lens during everyday wear. Here we show that favorable eyeglasses optical fit can be achieved through head-anthropometry-based parametric frame customization within the context of natural eye and lens interaction. We combined parametric frame design with mathematical lens modeling and evaluated both myopia and presbyopia groups. The results show that appropriate frame customization can maintain rational control of oblique aberrations for spherical and basic aspheric lenses without relying on high-order lens terms. Natural eye and lens interaction also produced a non-uniform pattern of lens use. These findings support a practical, frame-focused route to improving eyeglasses optical fit. Eyeglass performance depends not only on lens design, but also on how the eye uses the lens in daily viewing. Luwei Chen and colleagues propose a parametric frame customization approach to improve optical fit using head shape and eye-behavior data.