Optical Coherence Tomography Interpretation for Glaucoma

Structural glaucomatous changes occur more frequently in the earlier stages of glaucoma than functional defects, so we should give special care to optical coherence tomography (OCT) importance as the best current method. The retinal nerve fiber layer (RNFL) change detection is more useful in early glaucoma, the ganglion cell complex (GCC) in moderate to advanced glaucoma, while the visual field test is more useful in advanced stages, but overall, using a combination of RNFL, optic nerve head (ONH), and macular thickness measurement modalities is recommended for glaucoma evaluation because each parameter may be affected earlier than the others so, considering the findings from the RNFL, ONH, and macula enhances early diagnosis of glaucoma.