 The findings will be compared between the groups and to the normal material in G4. The investigators will be able to see whether, and if so, to what extent, eyes with glaucoma differ from normal eyes in terms of blood flow through OA as compared to the IOP measurements, and different biomechanical parameters of the eye. Thus, determine the pressure dynamics and calculate ocular compliance with the three different groups of research subjects; newly diagnosed glaucoma, ocular hypertension, normal tension glaucoma. 