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Sector-based analysis of optic nerve head shape parameters and visual field indices in healthy and glaucomatous eyes.
J Glaucoma. 1997 Dec; 6(6):370-6.JG

Abstract

PURPOSE

To evaluate the correlations between the sector optic nerve head parameters measured by Heidelberg Retina Tomograph (HRT, Heidelberg Engineering, Heidelberg, Germany), version 1.11S, and the visual field.

METHODS

One eye was randomly chosen from 55 individuals with glaucoma and 50 healthy individuals. Each participant had at last one Humphrey visual field, program 30-2 (Humphrey Instruments, San Leandro, CA, U.S.A.), and three 10 degrees HRT pictures. From the mean of the three HRT pictures, global measurements, superior (45 degrees-135 degrees), nasal (135 degrees-225 degrees), inferior (225 degrees-315 degrees), and temporal (315 degrees-45 degrees) sector measurements were calculated for the following parameters: disc area, effective area, area below reference, mean height of contour, volume below surface, volume above surface, volume below reference, volume above reference, and third moment. From the visual field results, mean deviation (MD), superior MD, and inferior MD were calculated. For each HRT parameter we calculated the "r" Pearson correlation with the corresponding visual field measures.

RESULTS

Within the combined healthy and glaucomatous groups we found highly significant (p < 0.001) correlations between the following HRT parameters and the visual field MD: inferior and mean high of contour (r = -0.53), inferior and third moment (r = -0.52), global and third moment (r = -0.49), inferior and volume above reference (r = 0.47), superior and third moment (r = -0.46), and superior and area below reference (r = -0.44). Correlations between global mean deviation and nasal or temporal sector parameters were generally smaller and less significant.

CONCLUSIONS

Inferior and superior HRT sector parameters were correlated with the respective visual field indices. In many cases these correlations were as strong or stronger than with the global equivalent shape measures.

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Authors+Show Affiliations

Iester M
Department of Ophthalmology, University of British Columbia, Vancouver, Canada.
Swindale NV
No affiliation info available
Mikelberg FS
No affiliation info available

MeSH

Diagnostic Techniques, OphthalmologicalFalse Positive ReactionsGlaucomaHumansImage Processing, Computer-AssistedLasersMiddle AgedOptic DiskRandom AllocationReproducibility of ResultsRetrospective StudiesVisual Field TestsVisual Fields

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

9407365

Citation

Iester, M, et al. "Sector-based Analysis of Optic Nerve Head Shape Parameters and Visual Field Indices in Healthy and Glaucomatous Eyes." Journal of Glaucoma, vol. 6, no. 6, 1997, pp. 370-6.
Iester M, Swindale NV, Mikelberg FS. Sector-based analysis of optic nerve head shape parameters and visual field indices in healthy and glaucomatous eyes. J Glaucoma. 1997;6(6):370-6.
Iester, M., Swindale, N. V., & Mikelberg, F. S. (1997). Sector-based analysis of optic nerve head shape parameters and visual field indices in healthy and glaucomatous eyes. Journal of Glaucoma, 6(6), 370-6.
Iester M, Swindale NV, Mikelberg FS. Sector-based Analysis of Optic Nerve Head Shape Parameters and Visual Field Indices in Healthy and Glaucomatous Eyes. J Glaucoma. 1997;6(6):370-6. PubMed PMID: 9407365.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sector-based analysis of optic nerve head shape parameters and visual field indices in healthy and glaucomatous eyes. AU - Iester,M, AU - Swindale,N V, AU - Mikelberg,F S, PY - 1998/1/4/pubmed PY - 1998/1/4/medline PY - 1998/1/4/entrez SP - 370 EP - 6 JF - Journal of glaucoma JO - J Glaucoma VL - 6 IS - 6 N2 - PURPOSE: To evaluate the correlations between the sector optic nerve head parameters measured by Heidelberg Retina Tomograph (HRT, Heidelberg Engineering, Heidelberg, Germany), version 1.11S, and the visual field. METHODS: One eye was randomly chosen from 55 individuals with glaucoma and 50 healthy individuals. Each participant had at last one Humphrey visual field, program 30-2 (Humphrey Instruments, San Leandro, CA, U.S.A.), and three 10 degrees HRT pictures. From the mean of the three HRT pictures, global measurements, superior (45 degrees-135 degrees), nasal (135 degrees-225 degrees), inferior (225 degrees-315 degrees), and temporal (315 degrees-45 degrees) sector measurements were calculated for the following parameters: disc area, effective area, area below reference, mean height of contour, volume below surface, volume above surface, volume below reference, volume above reference, and third moment. From the visual field results, mean deviation (MD), superior MD, and inferior MD were calculated. For each HRT parameter we calculated the "r" Pearson correlation with the corresponding visual field measures. RESULTS: Within the combined healthy and glaucomatous groups we found highly significant (p < 0.001) correlations between the following HRT parameters and the visual field MD: inferior and mean high of contour (r = -0.53), inferior and third moment (r = -0.52), global and third moment (r = -0.49), inferior and volume above reference (r = 0.47), superior and third moment (r = -0.46), and superior and area below reference (r = -0.44). Correlations between global mean deviation and nasal or temporal sector parameters were generally smaller and less significant. CONCLUSIONS: Inferior and superior HRT sector parameters were correlated with the respective visual field indices. In many cases these correlations were as strong or stronger than with the global equivalent shape measures. SN - 1057-0829 UR - https://www.unboundmedicine.com/medline/citation/9407365/Sector_based_analysis_of_optic_nerve_head_shape_parameters_and_visual_field_indices_in_healthy_and_glaucomatous_eyes_ L2 - http://ovidsp.ovid.com/ovidweb.cgi?T=JS&amp;PAGE=linkout&amp;SEARCH=9407365.ui DB - PRIME DP - Unbound Medicine ER -