Before the introduction of OCT, the standard of care for identifying initial glaucomatous damage was based on the physical examination.
Ophthalmologists gauged progression by an increase in the cup-to-disc ratio. Identifying and tracking these changes over time, however, were hampered by their subjective nature. Physicians often had to wait until visual field testing showed a scotoma consistent with glaucoma in order to quantify disease effect and stratify treatment.
We now know that by the time ganglion cell loss manifests as a scotoma on visual field testing, anywhere from 30% to (Read more...)