Unconsciously, the eyes repeatedly attempt to rest by shifting their focus to an area behind the screen, and this constant switch between screen and relaxation point creates eyestrain and fatigue.

When the error bound of location deviation is known, the original point pattern relaxation matching algorithm is improved to obtain better matching performance.

Some people think that, dysmenorrhea patients appropriate to drink liquor point - the active, expanding blood vessels, smooth muscle relaxation on the prevention and treatment of dysmenorrhea a role.