Effective Patching Treatment - These medical eye patches are approved for the treatment of amblyopia and strabismus, helping to train the affected eye to function properly. Super Soft Velvet Material - Skin-friendly, breathable, and comfortable, the non-adhesive design is gentle on sensitive skin and safe to use with glasses. Full Coverage & No Light Leakage - Designed to provide complete coverage without light leakage, supporting effective vision correction during treatment. Perfect Fit for Left & Right - Each eyeglass patch measures approximately 10 x 5 cm and can be easily applied to either the left or right lens of children's glasses, ensuring a secure and precise fit. Easy to Use - Simple three-step application process; place the patch over the unaffected eye. (Note: Please measure the lens size of the glasses before purchasing.)