A reduced-pressure dressi ng for treating a tissue site on a patient with reduced pressure, the dressing comprising: a dressi ng bolster for provi di ng a reduced-pressure treatment space over a tissue site; a sealing member for covering the dressing bolster and a portion of the patient's epidermis; a base adapted to be coupl ed to the sealing member; a reduced-pressure interface coupled to the base for providing reduced pressure to the dressi ng bolster; and a dressi ng reduced-pressure i ndi cator adapted to be fluidly coupled to the dressi ng bolster proxi mate the dressi ng bolster, wherein the dressi ng reduced-pressure i ndi cator comprises: a moving member that is adapted to move under reduced pressure, the moving member comprising a collapsible wall having a convex i nteri or surface, the collapsible wall having a fi rst end and a second end, wherein the second end is coupled to the base, and wherein the collapsible wall is formed to collapse under a reduced pressure greater than a threshold pressure (Pt) and, a visual indicator associated with the moving member, wherein the visual indicator comprises an indicator member that has an extended position and a retracted position, wherein the indicator member is coupled to the first end of the collapsible wall. with reduced pressure, the dressing comprising: a dressi ng bolster for provi di ng a reduced-pressure treatment space over a tissue site; a sealing member for covering the dressing bolster and a portion of the patient's epidermis; a base adapted to be coupl ed to the sealing member; a reduced-pressure interface coupled to the base for providing reduced pressure to the dressi ng bolster; and a dressi ng reduced-pressure i ndi cator adapted to be fluidly coupled to the dressi ng bolster proxi mate the dressi ng bolster, wherein the dressi ng reduced-pressure i ndi cator comprises: a moving member that is adapted to move under reduced pressure, the moving member comprising a collapsible wall having a convex i nteri or surface, the collapsible wall having a fi rst end and a second end, wherein the second end is coupled to the base, and wherein the collapsible wall is formed to collapse under a reduced pressure greater than a threshold pressure (Pt) and, a visual indicator associated with the moving member, wherein the visual indicator comprises an indicator member that has an extended position and a retracted position, wherein the indicator member is coupled to the first end of the collapsible wall. a dressi ng bolster for provi di ng a reduced-pressure treatment space over a tissue site; a sealing member for covering the dressing bolster and a portion of the patient's epidermis; a base adapted to be coupl ed to the sealing member; a reduced-pressure interface coupled to the base for providing reduced pressure to the dressi ng bolster; and a dressi ng reduced-pressure i ndi cator adapted to be fluidly coupled to the dressi ng bolster proxi mate the dressi ng bolster, wherein the dressi ng reduced-pressure i ndi cator comprises: a moving member that is adapted to move under reduced pressure, the moving member comprising a collapsible wall having a convex i nteri or surface, the collapsible wall having a fi rst end and a second end, wherein the second end is coupled to the base, and wherein the collapsible wall is formed to collapse under a reduced pressure greater than a threshold pressure (Pt) and, a visual indicator associated with the moving member, wherein the visual indicator comprises an indicator member that has an extended position and a retracted position, wherein the indicator member is coupled to the first end of the collapsible wall. a moving member that is adapted to move under reduced pressure, the moving member comprising a collapsible wall having a convex i nteri or surface, the collapsible wall having a fi rst end and a second end, wherein the second end is coupled to the base, and wherein the collapsible wall is formed to collapse under a reduced pressure greater than a threshold pressure (Pt) and, a visual indicator associated with the moving member, wherein the visual indicator comprises an indicator member that has an extended position and a retracted position, wherein the indicator member is coupled to the first end of the collapsible wall.