neuroretinal rim


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neuroretinal rim

A term used in describing the area of the optic disc which contains the neural elements and is located between the edge of the disc and the physiological cup. When describing the neuroretinal rim, as is often done in cases of glaucoma, one must include its colour, size, slope and uniformity. Syn. neural rim.
References in periodicals archive ?
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 [6].
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 recedes)
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 loss.
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.