Methodologic Differences and Measurement of Cup-Disc Ratio

Heritability Study on Size of the Physiologic Cup of the Optic Nerve Head - A Summary Report

“…A review of other findings will not be attempted here, but it is of interest that findings of genetic studies on the diameter of the nerve head itself as a continuous scale measure (Nakajima 1961, Nakajima et al 1966) and qualitative studies on measures of cup size (Jancke 1940, Armaly 1967 or shape and color of the nerve head (Rotth 1937) have consistently suggested a substantial hereditary contribution. In view of the considerable interobserver variation which is evident in clinical measurements of cup size (Schwartz 1976), this uniform trend among findings seems especially impressive in its support of a strong genetic determination of size of the normal physiologic cup.…”

Heritability Study on Size of the Physiologic Cup of the Optic Nerve Head - A Summary Report

“…A review of other findings will not be attempted here, but it is of interest that findings of genetic studies on the diameter of the nerve head itself as a continuous scale measure (Nakajima 1961, Nakajima et al 1966) and qualitative studies on measures of cup size (Jancke 1940, Armaly 1967 or shape and color of the nerve head (Rotth 1937) have consistently suggested a substantial hereditary contribution. In view of the considerable interobserver variation which is evident in clinical measurements of cup size (Schwartz 1976), this uniform trend among findings seems especially impressive in its support of a strong genetic determination of size of the normal physiologic cup.…”

Ultra-Widefield Imaging as a Teleophthalmology Screening Tool for Ocular Pathology

“……”

Agreement in Assessing Cup-to-Disc Ratio Measurement Among Stereoscopic Optic Nerve Head Photographs, HRT II, and Stratus OCT

“…Additionally, CDR estimation as a single ordinal parameter does not adequately describe the complex architecture of the optic disc and is limited due to high intra-and interobserver variability. 2,4,20 Despite these weaknesses, this method is still widely used in clinical practice.…”

Heritability Study on Size of the Physiologic Cup of the Optic Nerve Head - A Summary Report

“…A review of other findings will not be attempted here, but it is of interest that findings of genetic studies on the diameter of the nerve head itself as a continuous scale measure (Nakajima 1961, Nakajima et al 1966) and qualitative studies on measures of cup size (Jancke 1940, Armaly 1967 or shape and color of the nerve head (Rotth 1937) have consistently suggested a substantial hereditary contribution. In view of the considerable interobserver variation which is evident in clinical measurements of cup size (Schwartz 1976), this uniform trend among findings seems especially impressive in its support of a strong genetic determination of size of the normal physiologic cup.…”

Ultra-Widefield Imaging as a Teleophthalmology Screening Tool for Ocular Pathology

“……”

Agreement in Assessing Cup-to-Disc Ratio Measurement Among Stereoscopic Optic Nerve Head Photographs, HRT II, and Stratus OCT

“…Additionally, CDR estimation as a single ordinal parameter does not adequately describe the complex architecture of the optic disc and is limited due to high intra-and interobserver variability. 2,4,20 Despite these weaknesses, this method is still widely used in clinical practice.…”

Heritability Study on Size of the Physiologic Cup of the Optic Nerve Head - A Summary Report

“…A review of other findings will not be attempted here, but it is of interest that findings of genetic studies on the diameter of the nerve head itself as a continuous scale measure (Nakajima 1961, Nakajima et al 1966) and qualitative studies on measures of cup size (Jancke 1940, Armaly 1967 or shape and color of the nerve head (Rotth 1937) have consistently suggested a substantial hereditary contribution. In view of the considerable interobserver variation which is evident in clinical measurements of cup size (Schwartz 1976), this uniform trend among findings seems especially impressive in its support of a strong genetic determination of size of the normal physiologic cup.…”

Ultra-Widefield Imaging as a Teleophthalmology Screening Tool for Ocular Pathology

“……”

Agreement in Assessing Cup-to-Disc Ratio Measurement Among Stereoscopic Optic Nerve Head Photographs, HRT II, and Stratus OCT

“…Additionally, CDR estimation as a single ordinal parameter does not adequately describe the complex architecture of the optic disc and is limited due to high intra-and interobserver variability. 2,4,20 Despite these weaknesses, this method is still widely used in clinical practice.…”