Provided is a method for treating ocular hypertension and glaucoma, which comprises administrating an effective amount of 15-keto-prostaglandin compound having a ring structure at the end of the chain to the eyes of a mammalian subject in need of such treatment once a day. Each of the holes is configured to receive a piece that is to be electroplated, and to mask a portion of the surface and expose another portion of the surface of the piece. Address drivers may be used to supply address signals to the address transistors. The mode of operation can automatically switch. An electrical interconnect is provided within the housing having first and second resilient contacts for providing an electrical connection between the power source and the light source. Upon determination of a significant change in vehicle mass, adjustments are made to control of the regenerative braking systems and to energy storage levels to improve fuel efficiency.