No reports about the efficacy of laser goniopuncture (LGP) in longterm period after nonpenetrating deep sclerectomy (NPDS) are available in literature; no investigations of filtering zone status before LGP have been undertaken. Aim of the paper is to estimate the efficacy of LGP in different periods of time after NPDS and its correlation with filtering zone status. Fifty eyes of No reports about the efficacy of laser goniopuncture (LGP) in longterm period after nonpenetrating deep sclerectomy (NPDS) are available in literature; no investigations of filtering zone status before LGP have been undertaken. Aim of the paper is to assess the efficacy of LGP in different periods of time after NPDS and its correlation with filtering zone status. Fifty eyes of