For mild cases, soak the foot in warm water, keep it clean, and wedge a small piece of cotton under the corner of the ingrown nail to lift it off the skin.
对于一般程度的病情，可以用热水洗脚保持洁净，并在内嵌的指甲下楔入小片的棉花使它离开皮肤。
2
The method uses laser speckle technique to record the shift amount of speckle patterns due to micro wedge angles, and thus micro wedge cangles of the test piece are induced.