Spectral Domain Optical Coherence Tomography Analysis for Glaucoma

Inclusion Criteria: The POAG group inclusion criteria were; * IOP higher than 21 mmHg before treatment on three different visits, * Best corrected VA of 20/25 or better with a spherical equivalent within ±5 D and a cylinder correction within +3 D; * An open angle confirmed by gonioscopy. * Glaucomatous optic disc damage defined as by the presence of glaucomatous optic neuropathy like rim thinning (diffuse or local), cupping, notching, and a cup/disc ratio \>0.2 with asymmetry. NTG group were included if; • They had the same optic disc and visual field criteria as for the POAG patients with the exception that their IOP was as ≤21 mmHg on three separate visits without any glaucomatous treatment. The control group * Who had no ocular disease * Who had not undergone ocular surgery or laser procedures. * With a normal anterior segment, open angles, and normal posterior segment findings also normal optic nerve head appearance in their ophthalmic examination. * The IOP measurements were lower than 21 mmHg, and full-threshold 30-2 HFA were also within normal limits in the control group. Exclusion Criteria: * Subjects with any retinal disease, diabetes mellitus, or neurological disease or who had undergone ocular surgery and laser procedures. * Subjects with pseudoexfoliation glaucoma and pigmentary glaucoma were excluded.