If you keep rubbing your nose when you remove your glasses, or if your glasses slide down your nose so you're always nudging them back up, the nose pads on your glasses are off. Eyeglasses should need occasional and minor adjustment. If you have to constantly adjust or replace the nose pads too often, they make be a poor fit for your face. Be careful when repairing the nose pads. Aggressive adjustments can break or warp your glasses frame.
Take off your eyeglasses and place them on a clean towel. Use a light-coloured towel so you can easily see the screws in case they fall off; they are tiny and tend to bounce.
Use the small screwdriver included in your eyeglass repair kit tor remove the screws holding your nose pads in place.
Place the new nose pad on your eyeglasses. Position it in the precise position the original nose pad occupied. Insert the screw and screw the nose pad into place. Don't tighten the screw all the way, since you'll adjust the angle in a second.
Remove and replace the second nose pad in this same manner.
Push the nose pads into the proper alignment, then tighten the screws the rest of the way. Nose pads should make a 20- to 30-degree angle (with a vertical line) so they rest on your nose, according to Totally Optical. Since the screws aren't fully adjusted, you should be able to push the pads into alignment using your fingers. Once you've made these adjustments, tighten the screws all the way.
Take off your eyeglasses and inspect the nose pads. If they've been hitting your nose in the wrong place, you'll probably know where they're off. But check them anyway, identifying the areas you'll need to adjust.
Grasp one of the nose pads with the pliers included in the eyeglass repair kit. Hold the glasses steady with your other hand. Turn your wrist to adjust the nose pad. Bring the nose pad into alignment with that 20- to 30-degree angle. The bottom of the nose pad should be closer to the glasses frame than the top for a natural fit.
Try your glasses back on for fit. They should feel better, but if you haven't adjusted them enough you may still feel discomfort. If this is the case, take them off and work on them again with the pliers.
Push the front of the nose pad together so the glasses hit your face higher on the bridge of the nose. Push the nose pad back toward the glasses frame if you need to drop the glasses so they sit lower on your face.