Lenses will break when hit by a strong impact. When playing high impact sports or if hit by a hard ball, the broken lenses may cause damage to the eyes or face, and could lead to vision loss. If there's risk that the lenses will break, please wear protective equipment over your glasses.
Avoid using tinted lenses in dark places. Visibility is reduced due to insufficient light.
Please do not look directly at the sun even if you're wearing tinted lenses. It may cause vision loss or severe injuries to your eyes.
There is a two week adjustment period for any new prescription glasses. Do not switch back and forth between old and new glasses - this will make the adjustment time longer.
If you are a first time Progressive or bifocal wearer, it will take time to adjust and it will limit your depth perception. Be careful going up and down the stairs and places with height differences.
If you experience any itchiness or rash on areas where the frame touches the skin, please stop wearing the glasses and consult with your doctor or dermatologist.
When putting on the frames, you may accidentally hit your eyes. Please open the temples and put the glasses on slowly.
Please remove your glasses when you shower or swim.
The glasses will break if you force the temples open too wide.
Through wear and tear, the frame may experience some cracks, breakage, or discoloration.
The end pieces of the frame and screws can be very sharp. Please do not wear them while sleeping or taking care of small children.
Please do not wear your glasses in places with extreme temperatures such as hot saunas or inside an industrial refrigerator. The lenses may change shape, cause distortion, or fall out of the frame.
Please do not leave your glasses out in direct sunlight. This may cause damage to the lens and frame.
Elastic frames are durable and do not break easily but please do not bend or twist it intentionally. It may cause frame distortion.
The nylon string may break in extreme heat or hit by strong impact.
The lens and frame will change shape or peel if you leave it out on the windshield of your car in extreme heat.
Please do not adjust the frame yourself.