Hrt versus oct optic disc area

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Web16 dec. 2015 · Figure 3.2 illustrates the linear regression line between log neuroretinal rim area and optic disc area (marked “50%”). This is the “average” or “predicted” relationship between log neuroretinal rim area … Web6 mei 2024 · The various devices measure RNFL thickness in slightly different ways. In the Spectralis OCT, it’s measured directly with a 3.46-mm diameter circular scan centered on the optic disc. In the case of the Cirrus OCT, the measurement of RNFL is generated from a 6 mm 3 cube scan centered on the optic disc.

Research Article Assessment of the Optic Disc Morphology

Webficient values for disc area, rim area, cup area, cup/disc area ratio, mean cup depth and maximum cup depth were 0.367, 0.213, 0.632, 0.681, 0.775 and 0.661, respectively. No signifi-Received: August 17, 2011 Accepted after revision: June 8, 2012 Published online: August 22, 2012 Ophthalmologica Assist. Prof. Göktuğ Seymenoğlu, MD Web1 dec. 2009 · OCT values were consistently larger than HRT values for disc and cup area. Compared with HRT, small rim areas and volumes tended to be minimized by OCT, and … braebeck foundation

Comparison of optic disc parameters measured by RTVue-100 FDOCT versus ...

WebThe optic disk, cup, and peripapillary crescent areas were measured by marking their outlines with a cursor. The projected area was automatically calculated by the computer (Fig. 1). The optic disk was defined by the inner border surrounding the nerve tissue; care was taken not to include the white peripapillary scleral ring. WebThe mean disc area as measured by HRT3 was 2.21±0.46 mm 2, and the mean disc area of the KOWA was 2.80±0.55 mm 2 in POAG patients (P<0.001, Table 1). ... Garweg JG. Morphometric assessment of normal, suspect and glaucomatous optic discs with Stratus OCT and HRT II. Eye (Lond). 2006;20(11):1288–1299. 36. WebOptical coherence tomography (OCT) signal strength correlated with the image quality parameters of the HRT and GDx. The percentage of good quality images was the lowest … hacker company

Measurement of optic disc size and rim area with spectral-domain OCT …

HRT versus OCT in diagnosing preperimetric glaucoma

Web9 jul. 2012 · A portion of the difference in HRT and SD-OCT disc measurements is due to HRT's magnification correction algorithm. Rim area measurements from HRT were … WebMore advanced imaging technology such as optic disc by optical coherence tomography (OCT) and Heidelberg Retina Tomograph (HRT) are often used and yield more specific measurements. Correcting for disc size also improves the sensitivity of imaging techniques such as the (HRT) in identifying abnormal discs [4]. hacker comment faireWebVery large LoA were observed: -0.29 to 0.70 mm for OCT and HRT, -0.07 to 0.71 mm for OCT and funduscopy, and -0.29 to 0.53 mm for HRT and funduscopy. There was poor … hacker community online

"WebThe relationship between CCT and HRT parameter volume below reference for eyes suspicious of glaucoma (n = 103 eyes). The cup volume tended to be greater for eyes with thin corneas. Source... " - Hrt versus oct optic disc area

Hrt versus oct optic disc area

Comparison of Optic Disc Parameters in Hyperopic and ... - PubMed

Web4 mei 2014 · A descriptive analysis was made using Statistical Package for the Social Sciences (SPSS) for Windows, version 19.0 (SPSS Inc., Chicago, USA). Results: The mean optic disc area was 3.41 ± 0.47... Webarea, disc area, average cup/disc (C/D) ratio, vertical C/D ratio, and cup volume. e equivalent ONH parameters were also measured using the Cirrus OCT (Optic Disc Cube 200 × 200 scanpro-tocol; so ware version .) following a standard procedure described elsewhere. Le eye data were converted to a right eye format.

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Web9 jul. 2012 · PURPOSE To compare optic disc and neuroretinal rim area measurements from spectral-domain optical coherence tomography (SD-OCT) to those from confocal …

WebThe mean disc area as measured by HRT3 was 2.21±0.46 mm 2, and the mean disc area of the KOWA was 2.80±0.55 mm 2 in POAG patients (P<0.001, Table 1). ... Garweg JG. … Precise optic disc size measurements based on anatomically exact disc margins are fundamental for a correct assessment of glaucoma suspects. Computerized imaging techniques, such as confocal-scanning-laser-tomography (CSLT), which applies operator defined boundaries and optical … Meer weergeven Retrospectively, patients that simultaneously received CSLT and BMO-OCT scans were included. Their images were … Meer weergeven Area measurements (CSLT optic disc area vs. BMO-area by OCT) showed a systematic deviation with a divergent tendency with increasing size. Our mathematical equation offers an estimated comparison of … Meer weergeven Our study included 373 eyes with a median optic disc area by CSLT/ BMO-area by OCT of 2.56 mm2 and 2.19 mm2 respectively. … Meer weergeven

WebIn the present study, the mean difference between the HRT and the magnification-corrected OCT disc area was 0.48 mm 2 and the span of 95% limits of agreement was 2.04 mm 2 (1.5 to −0.54 mm 2 ). Consistent with previous studies, the OCT measured a larger disc area compared with the HRT. WebThe two instruments showed no difference in mean optic disc area measurements (1.98 ± 0.37 for HD-OCT vs 1.98 ± 0.39 mm for HRT-3, p=0.95). HD-OCT showed smaller rim …

Web6 sep. 2011 · Optic Disc Basic Examination. When assessing a disc for glaucoma there are many subtle characteristics which should be examined. There are also various ways to examine the optic disc. For an assessment of the optic disc, there is “the 3 Cs” rule- the cup, colour and contour. The Contour. The borders of the optic disc should be clear and ...

Web: HRT overestimated optic disc area as compared to SD-OCT. A portion of the difference in HRT and SD-OCT disc measurements is due to HRT's magnification correction … hacker compteWebAbstract . Optical coherence tomography (OCT) can aid in the differential diagnosis of optic nerve head (ONH) elevation. Specific OCT hallmarks, such as “V contour” and a “lumpy-bumpy” appearance, associated with … hacker commands cmdWeb10 mei 2012 · HRT overestimated optic disc area as compared to SD-OCT. A portion of the difference in HRT and SD-OCT disc measurements is due to HRT's magnification … hacker commandeWeb1 jul. 1995 · Measurements of Optic Disk Size With HRT II, Stratus OCT, and Funduscopy Are Not Interchangeable 2006, American Journal of Ophthalmology Citation Excerpt : We tried to minimize this optical effect by keeping the position of the lens constant as the examiner rested his hand on the subject’s face rather than holding it in the air. hacker compte facebook gratuitementWeb2 okt. 2015 · There were no statistically significant differences between the second and the normal group in the OCT and HRT measurements. In Figures 1 – 5, we observe higher … hacker compte facebookWeb22 jun. 2011 · OCT values were consistently larger than HRT values for disc and cup area. Compared with HRT, small rim areas and volumes tended to be minimized by OCT, and … hacker compte discordWebThe relationship between disc area and vertical cup-disc ratio (VCDR). A, Scatterplot of disc area vs VCDR. The dotted lines represent mean disc area − 1 SD (1.436 mm2) and mean disc area + 1 SD (2.109 mm2). These values were used to define disc area size. The disc area mean is unadjusted for age for this figure. hacker compte instagram gratuitement