Effects of Palmitoylethanolamide on Inner Retinal Function in Glaucoma Patients by Pattern Electroretinogram

The general purpose of the study is to evaluate the potential beneficial effects of PEA 600 mg supplementation on RGCs function in subjects with glaucoma by pattern electroretinogram after three months of therapy. Secondary objectives are to assess effects on intraocular pressure (IOP) values, if any; to record visual acuity, visual field, central corneal thickness (CCT), and Optical coherence tomography (OCT) (ganglion cell complex - GCC) changes, if any and to follow quality of life (QL) perception (general vision -GV and general health - GH of national eye instutute visual functioning questionnaire 25 items - NEI VFQ25)