Freeform vs. Aspheric Spectacle Lenses: A Comprehensive Review of Optical Performance, Clinical Outcomes, and Patient Considerations.
Ladopoulos Konstantinos, Pateras Evangelos, Ninos Georgios·Cureus
Spectacle lens design has evolved from spherical lenses to aspheric lenses (ASL) and freeform lenses (FFL) to improve peripheral optics and wearer comfort. In this review, we compare ASLs and FFLs across optical performance, visual function, patient-reported outcomes, and practical considerations. We synthesized eviden…