Reproducibility of Optic Disc Measurements With Computerized Analysis of Stereoscopic Video Images

Inter- and intraobserver variation in the analysis of optic disc images: comparison of the Heidelberg retina tomograph and computer assisted planimetry

“…The interobserver coefficient of variation is slightly higher, and the agreement similar, to that previously reported for planimetry32 42 (3.0% to 4.2%) and for the ONHA (6.2%) 25…”

“…The mean interobserver coefficient of variation with the HRT, at 8.2%, is similar to that previously reported for planimetry (7.8%),42 the ONHA 7.7%25 and slightly better than that for the IS 200028 (mean 11.6%).…”

Inter- and intraobserver variation in the analysis of optic disc images: comparison of the Heidelberg retina tomograph and computer assisted planimetry

“…The interobserver coefficient of variation is slightly higher, and the agreement similar, to that previously reported for planimetry32 42 (3.0% to 4.2%) and for the ONHA (6.2%) 25…”

“…The mean interobserver coefficient of variation with the HRT, at 8.2%, is similar to that previously reported for planimetry (7.8%),42 the ONHA 7.7%25 and slightly better than that for the IS 200028 (mean 11.6%).…”

Optic disc diameter influences the ability to detect glaucomatous disc damage

“…Our finding that glaucomatous and normal discs differ in diameter is in accordance with observation of several other investigators. In some studies this finding has been present but not statistically significant (Caprioli et al 1986;Bishop et al 1988); in others it has been significant (Airaksinen et al 1985). We do not know the reason for the clear difference between the mean diameters of the glaucomatous and n o d groups in our study, 1.66 mm and 1.59 mm, respectively.…”

An analysis of the relationship between high‐pass resolution perimetry and neuroretinal rim area in normal‐tension glaucoma

“…HRP Functional Channels (FC) and neuroretinal rim area (rim area), converted to absolute values using corneal curvature and axial length in Littman's formula (Littmann 1982), were used as study parameters. Reproducibility of disc measurements with the Rodenstock analyzer has been reported elsewhere (Caprioli et al 1986;Tomita et al 1986). Rim area was measured for the entire disc and the four quadrants: i.e., inferior, superior, nasal, and temporal.…”

Inter- and intraobserver variation in the analysis of optic disc images: comparison of the Heidelberg retina tomograph and computer assisted planimetry

“…The interobserver coefficient of variation is slightly higher, and the agreement similar, to that previously reported for planimetry32 42 (3.0% to 4.2%) and for the ONHA (6.2%) 25…”

“…The mean interobserver coefficient of variation with the HRT, at 8.2%, is similar to that previously reported for planimetry (7.8%),42 the ONHA 7.7%25 and slightly better than that for the IS 200028 (mean 11.6%).…”

Optic disc diameter influences the ability to detect glaucomatous disc damage

“…Our finding that glaucomatous and normal discs differ in diameter is in accordance with observation of several other investigators. In some studies this finding has been present but not statistically significant (Caprioli et al 1986;Bishop et al 1988); in others it has been significant (Airaksinen et al 1985). We do not know the reason for the clear difference between the mean diameters of the glaucomatous and n o d groups in our study, 1.66 mm and 1.59 mm, respectively.…”

An analysis of the relationship between high‐pass resolution perimetry and neuroretinal rim area in normal‐tension glaucoma

“…HRP Functional Channels (FC) and neuroretinal rim area (rim area), converted to absolute values using corneal curvature and axial length in Littman's formula (Littmann 1982), were used as study parameters. Reproducibility of disc measurements with the Rodenstock analyzer has been reported elsewhere (Caprioli et al 1986;Tomita et al 1986). Rim area was measured for the entire disc and the four quadrants: i.e., inferior, superior, nasal, and temporal.…”

Inter- and intraobserver variation in the analysis of optic disc images: comparison of the Heidelberg retina tomograph and computer assisted planimetry

“…The interobserver coefficient of variation is slightly higher, and the agreement similar, to that previously reported for planimetry32 42 (3.0% to 4.2%) and for the ONHA (6.2%) 25…”

“…The mean interobserver coefficient of variation with the HRT, at 8.2%, is similar to that previously reported for planimetry (7.8%),42 the ONHA 7.7%25 and slightly better than that for the IS 200028 (mean 11.6%).…”

Optic disc diameter influences the ability to detect glaucomatous disc damage

“…Our finding that glaucomatous and normal discs differ in diameter is in accordance with observation of several other investigators. In some studies this finding has been present but not statistically significant (Caprioli et al 1986;Bishop et al 1988); in others it has been significant (Airaksinen et al 1985). We do not know the reason for the clear difference between the mean diameters of the glaucomatous and n o d groups in our study, 1.66 mm and 1.59 mm, respectively.…”

An analysis of the relationship between high‐pass resolution perimetry and neuroretinal rim area in normal‐tension glaucoma

“…HRP Functional Channels (FC) and neuroretinal rim area (rim area), converted to absolute values using corneal curvature and axial length in Littman's formula (Littmann 1982), were used as study parameters. Reproducibility of disc measurements with the Rodenstock analyzer has been reported elsewhere (Caprioli et al 1986;Tomita et al 1986). Rim area was measured for the entire disc and the four quadrants: i.e., inferior, superior, nasal, and temporal.…”