ABSTRACT
Ophthalmic lenses are the most widespread optical elements in the world. However, simplicity in their design needs to be adapted to the anatomical and physiological constraints imposed by the eye. Practical manufacturing of ophthalmic lenses also utilizes tolerance of the eye to provide an efficient way of grinding, polishing, and finishing lenses to satisfy strong demands on variety and short delivery times. New designs using an aspheric surface help to improve the performance of monofocal lenses. At the same time, progressive lenses for presbyopia represent a step forward in the complexity and performance of optical elements having only two refracting surfaces. Knowledge of the compound eye–lens system, along with the basis of the design of ophthalmic lenses, must be used in the final adaptation of the ophthalmic lens for a given user.
