Abstract: The present disclosure relates to an ophthalmic lens for preventing progression of myopia and to spectacles with the ophthalmic lens. At least one surface of the ophthalmic lens is defined by a superposition of a base sag profile and a perturbation sag profile, and the perturbation sag profile is defined as a product of a first subfunction for defining a perturbation characteristic sag and a weighting function for weighting the first subfunction. As a result, the visual fatigue caused by ghosting to myopic patients can be avoided or significantly reduced while preventing or controlling the progression of myopia, thereby effectively improving the wearing visual experience of myopic patients.

Abstract: The present disclosure relates to an ophthalmic lens with an extended depth of field including an optical unit that includes a first surface and a second surface both centered by an optical axis and opposite to each other. At least one of the first and second surfaces is defined by a superposition of a base sag profile and a feature sag profile and includes in sequence a first zone, a second zone, and a third zone along a radial direction away from the optical axis. The first zone is designed as a freeform surface zone, and the second zone is designed as a phase transition zone. The ophthalmic lens enables patients to acquire a continuous range of vision from intermediate to far distances and also optimizes their far vision without visual interference, such that the resulting far vision correction is equivalent to that of existing monofocal ophthalmic lenses.