The present disclosure is directed to lens, methods of making, designing lens and/or methods using lens in which performance may be improved by providing one or more steps in the central portion of the optical zone and one or more steps in the peripheral portion of the optic zone. In some embodiments, such lens may be useful for correcting refractive error of an eye and/or for controlling eye growth.本發明係關於透鏡，製造、設計透鏡之方法及/或使用透鏡之方法，其中效能可藉由在光學區之中心部分中提供一或多個階梯且在光區之外周部分中提供一或多個階梯來改良。在一些實施例中，該透鏡可適用於校正眼睛之折射異常及/或控制眼睛生長。
