The cup-to-disc ratio (often notated CDR) is a measurement used in ophthalmology and optometry to assess the progression of glaucoma. The optic disc is the anatomical location of the eye's "blind spot", the area where the optic nerve leave and blood vessels enter the retina. The optic disc can be flat or it can have a certain amount of normal cupping. But glaucoma, which is in most cases associated with an increase in intraocular pressure, often produces additional pathological cuppi… WebJan 28, 2024 · For ONH evaluation, cup to disc ratio (CDR), means optic nerve rim to disc ratio in diameters, is one of the most important indicators for glaucoma screening and …
Neuro-Ophthalmological Optic Nerve Cupping: An Overview
WebSurfaces of the optic cup, optic rim, and peripapillary retina are determined by a change in reflectance intensity along the z-axis at each point. This creates a topographic map for … WebA cup to disc ratio greater than six-tenths is generally considered to be suspicious for glaucoma. Through periodic photographs of the optic nerve, the ratio of the cup to the disc can be monitored. This helps the doctor determine whether or not damage is still occurring to the nerve fibers with current treatment and/or if treatment should be ... thrasher supreme jacket
Joint optic disc and cup segmentation based on densely …
WebThe mean cup-disk ratio in the group examined with the Hruby lens was 0.38 and that in the group examined with the direct ophthalmoscope was 0.25. With either method almost … WebJul 8, 2015 · Glaucoma is the second leading cause of loss of vision in the world. Examining the head of optic nerve (cup-to-disc ratio) is very important for diagnosing glaucoma and for patient monitoring after diagnosis. Images of optic disc and optic cup are acquired by fundus camera as well as Optical Coherence Tomography. The optic disc and optic cup … WebApr 27, 2024 · This video shows you how to obtain an accurate cup to disc ratio for your record keeping. It demonstrates methods for measuring the size of the disc and cup and how to decide whether the... undressed hairstory