A Comparison of Retinal Nerve Fibre Layer Thickness by Spectral Domain Optical Coherence Tomography in Primary Open Angle Glaucoma, Normotensive Glaucoma and Glaucoma Suspect

Purpose: To Compare Retinal Nerve Fibre Layer Thickness by Spectral Domain Optical coherence Tomography in primary open angle glaucoma, normotensive glaucoma and glaucoma suspect. Patients and methods: This prospective study included 124 eyes of 67 subjects, average and quadrant RNFL thickness was measured in all these patients. Results: The average RNFL thickness in POAG, NTG and GS groups were 55.26±19.75, 70.1±17.81 and 82.29±10.66 μm respectively, (p= 0.0002) which was statistically highly significant. Same pattern was seen in all the quadrants. Conclusion: RNFL global average thickness, average thicknesses in four quadrants in POAG patients were significantly decreased compared with the NTG and the GS groups and in NTG patients were significantly decreased compared with GS groups.