Abstract: Contact lenses, methods and systems for accomplishing the requirement for biocompatibility of oxygen delivery to the eye, and the cornea in particular, when elements and components are used which reduce the transmissibility of oxygen and which require coverage of a significant area of the non-vascularized cornea. A contact lens assembly is provided, comprising: an anterior surface, a posterior surface and at least one element or component having a substantially low oxygen permeability disposed within the lens. The contact lens also includes a layer having an oxygen permeability greater than the aforementioned element or component. The thickness of this layer is such that the layer provides an equivalent oxygen percentage to the cornea beneath the aforementioned element or component.

Abstract: A service apparatus and method for providing a deferred message, and a storage medium. The service method for providing a deferred message comprises: receiving a message parameter sent by a first client and to be forwarded to a second client (S1); determining whether a user associated with the second client is online (S2); if the user associated with the second client is not online, determining that the message parameter to be forwarded is a message parameter of a deferred message, and saving the message parameter into a database of a server (S3); and when receiving an online prompt of the user associated with the second client, delivering the message parameter to the second client (S4). The method can significantly reduce the network traffic and occupation of the storage space.

Abstract: Various embodiments provide ranking methods and systems. The ranking method can be implemented by a computer system. In an exemplary method, real-time data can be obtained. A total user number of the real-time data can be counted. A distribution pattern of user number in one or more data value intervals can be obtained from the real-time data. The total user number and the distribution pattern can then be stored as intermediate data. A ranking query request of a user and an actual data value of the user can be received. A ranking of the user can be calculated according to the actual data value of the user and the intermediate data.