Even the most expensive, well-made sunglasses require maintenance from time to time. Due to the constant pressure applied to different parts of sunglasses, it is easy for them to become lopsided. One way to fix lopsided sunglasses is to take them to an optical store and ask for assistance from a technician. But if you want to save some money, fix your sunglasses yourself.
Inspect the area where the hinges connect to the temple. Look for an adjusting screw. Tighten the screw on the left hinge of the sunglasses using a microscrewdriver from the glasses repair kit. Do the same for the right hinge.
Place the sunglasses upside down on a flat table to see if they are still lopsided. Inspect the temples to ensure they are straight. Bend a crooked temple carefully using needle-nose pliers. Adjust the temple very slowly to avoid damaging it.
Put on the sunglasses to see if they are still lopsided. Look in a mirror and inspect the bridge to make sure it is not bent. Straighten the bridge carefully using needle-nose pliers. If the bridge is plastic, you can soften it by holding your sunglasses over boiling water. This should help make adjustments easier.
Place the sunglasses right side up on a flat table. Inspect the nose pads underneath the bridge to see if they are crooked. Apply gently pressure to the crooked nose pad using needle-nose pliers. Use steady movements as sudden jerks can break them.