The ornamental design for eyeglass frame, as shown and described.
FIG. 1 is a perspective view of an eyeglass frame showing my new design;
FIG. 2 is a front side elevational view thereof;
FIG. 3 is a rear side elevational view thereof;
FIG. 4 is a left side elevational view thereof;
FIG. 5 is a right side elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a perspective view showing the eyeglass frame in condition of use with eyeglass temples; lens and nose pads, the broken lines showing of eyeglass temples; lens and nose pads are for illustrative purposes only and forms no part of the claimed design.