Mossbock et al. [20] found no association between MMP1 (rs1799750), MMP2 (rs243865, also investigated in our study; rs243866), and MMP9 (rs17576, also included in our study) polymorphisms and the presence of POAG or exfoliative glaucoma in the Caucasian population. This evidence concerns the gene MMP1 and exfoliation syndrome.