Fiber optic light combinations easily allow for viewing and lighting through a singular sight glass or where vibration is a concern. This unique combination can be incorporated onto L.J. Star MetaClamp® windows, other L.J. Star Sight Windows or retrofitted onto existing vessel windows and in-line sight glasses such as Visual Flow Indicators. The fiber optic light output is a compact, easily adaptable unit, available in explosion proof and non-explosion proof configurations.