WebApr 7, 2024 · It is vital to classify the disc into small, normal, or large as it significantly affects evaluation of other ONH parameters like the cup–disc ratio (CDR) and the NRR. The discs can be classified on the basis of the disc diameter as: small (1.1–1.3 mm), medium (1.4–1.7 mm), and large (1.8–2 mm). WebAccording to my eye doctor one of my corneas is thinner than the other so she added 1 to my IOP. Even with this my IOP is in the normal range - the high end of normal but …
Vertical cup/disc ratio in relation to optic disc size: its value in ...
WebThe range of normal for the optic nerve appearance is huge, Dr. Fechtner notes. ... This information helps to make sense of the cup-to-disc ratio. ... Nasal, Temporal. In a normal optic disc, the thickest portion of the neuroretinal rim is located inferiorly at 6 o’clock, followed next by the superior, nasal and temporal portions of the rim ... WebRESULTS The CDR was related to DD by the equation CDR = (−1.31 + (1.194 × DD))/DD. The sensitivity in small, medium, and large discs was 80%, 60%, and 38% respectively … justin f kimball high school logo
Cup-to-Disc Ratio - an overview ScienceDirect Topics
WebVertical cup-to-disc ratio asymmetry ≥0.20 occurs in 2.1% of U.S. adults without glaucoma. The prevalence of vCDR asymmetry ≥0.20 among white, black, and Hispanic adults without glaucoma is 2.4%, 0.7%, and 1.8%, respectively. WebThe Cup-to-Disc Ratio (CDR) serves as the most important indicator for glaucoma screening and plays a significant role in clinical screening and early diagnosis of glaucoma. In general, obtaining CDR is subjected to measuring on manually or automatically segmented optic disc and cup. WebClinical assessment of the ISNT rule for a normal optic nerve. The ISNT rule is that disc rim thickness shows a characteristic configuration of inferior (I) greater than or equal to superior (S) greater than or equal to nasal (N) … justin flax wharton