The ornamental design for a contactlens, as shown and described.
The patent file contains at least one drawing executed in color. Copies of this patent with color drawings will be provided by the Office upon request and payment of the necessary fee.
FIG. 1 is a front elevational view of a contact lens;
FIG. 2 is a rear perspective view thereof;
FIG. 3 is a right-side elevational view thereof;
FIG. 4 is a left-side elevational view thereof;
FIG. 5 is a bottom planar view thereof; and,
FIG. 6 is a top planar view thereof.
The parts delineated in broken line form no part of the claimed design.