The ornamental design for a spring-bridge for eyewear, as shown and described.
FIG. 1 is a perspective view of a spring-bridge or eyewear showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top view thereof;
FIG. 5 is a bottom view thereof; and,
FIG. 6 is a right side elevational view thereof, the left side elevational view being a mirror image thereof.
The broken lines showing the lenses and other structures of the eyewear throughout the drawing views are for illustrative purposes only and form no part of the claimed design.