The ornamental design for the clip-on accessory for eyeglasses, as shown and described.
FIG. 1 is a front perspective view of the clip-on accessory for eyeglasses showing my new design;
FIG. 2 is a rear perspective view thereof in which the clip-on accessory for eyeglasses has been shown dismounted from the broken line eyeglass structure it was shown attached to in FIG. 1. A broken line arrow shows the direction of attachment of the claimed design to the eyeglass structure;
FIG. 3 is an enlarged front view thereof;
FIG. 4 is an enlarged right side view thereof;
FIG. 5 is an enlarged left side view thereof;
FIG. 6 is an enlarged rear view thereof;
FIG. 7 is a further enlarged rear perspective view thereof;
FIG. 8 is a further enlarged front view thereof;
FIG. 9 is a further enlarged top plan view thereof;
FIG. 10 is a further enlarged bottom plan view thereof; and,
FIG. 11 is a further enlarged rear view thereof.
The broken line showing of environmental structure, or portions thereof; broken lines depicting the lines at which partial views of the environmental structure are cut off; and the broken line arrow showing the attachment of the design to environmental structure are all for illustrative purposes only and form no part of the claimed design.