d) There is significant cupping with concentric thinning of the neuroretinal rim
Similarly, Chauhan and Burgoyn (21) stated that the axis between the fovea and center of the BMO-based optic disc must be used in neuroretinal rim
and peripapillary RNFL thickness measurements, otherwise the diagnostic sensitivity of SD-OCT measurements may be reduced.
OCT can be used to analyze and measure not only the peripapillary RNFL thickness [3-5] but also topographic parameters of the ONH, including the disc area, neuroretinal rim
area, and the cup-to-disc ratio .
POAG is a slowly progressing bilateral chronic optic neuropathy characterized by RGC loss and morphological changes in the optic nerve head (ONH) with thinning of the neuroretinal rim
and enlargement of the optic disc cup.
The repeated OCT indicated the bilateral neuroretinal rim
thickening and thinning of the peripapillary RNFL.
Diffuse thinning and localized notching in the neuroretinal rim
was noted in 188 (94%) and86 (43%) patients, respectively.
* laminar dot sign (seen in the base of the optic disc when the neuroretinal rim
During the angiogram, the focus was changed from the neuroretinal rim
to the bottom of the cup to avoid artefacts.
The team also found an enlarged neuroretinal rim
area in the optic nerve, which shows that deaf people have more neurones transmitting visual information than hearing.
a) Baring of a circumlinear vessel, indicating possible erosion of the neuroretinal rim
outwards from the position of the vessel
In glaucoma, acquired optic disc pits form due to localized depressions in the lamina cribrosa resulting from neuroretinal rim
Among the conclusions of these studies, two stand out: first, hemoglobin concentrations are better correlated with functional defects of glaucoma than the corresponding areas of the neuroretinal rim
or RNFL thicknesses.