cup-to-disc ratio

Researchers image single cell deaths in glaucoma patientsA new imaging technique can show the deaths of individual cells in people with glaucoma by labelling the cells with fluorescent dye, according to researchers. The approach might eventually be used to diagnosis the disease in its early stages or measure its progression.
Is the ISNT rule helpful?Are there any absolute laws for glaucoma other than the broad few that govern its definition? Well, maybe not. Think about it. The word “typically” precedes much of what we say when we describe glaucoma outside of its definition. An example would be the fact that visual field loss is typically nasal at first. However, a temporal wedge defect may, at times, be the first defect to become manifest.
Big optic cupsCup-to-disc ratio is certainly important in evaluating a patient for glaucoma. However, it’s not the only clinical measurement to consider. Evaluate the overall size of optic discs. Optic disc hemorrhages may have corresponding retinal nerve fiber defects. Subtle areas of parapapillary atrophy are another indicator for the possible presence of glaucoma. Look beyond the optic disc cupping to gather additional information.