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A comparison of optic disc topographic parameters in patients with primary open angle glaucoma, normal tension glaucoma, and ocular hypertension

Graefe's Archive for Clinical and Experimental Ophthalmology volume 241, pages 541–545 (2003)Cite this article

Abstract

Background

Heidelberg Retina Tomograph (HRT) findings have been employed to quantitatively assess the topography of optic discs. We measured topographic parameters of optic discs in patients with primary open-angle glaucoma (POAG), normal-tension glaucoma (NTG), and ocular hypertension (OH) using an HRT in order to determine whether HRT topographic parameters can be used to differentiate those conditions.

Methods

Seventeen eyes in 17 patients with POAG, 23 eyes in 23 patients with NTG, and 15 eyes in 15 patients with OH were examined using an HRT, and the results were analyzed by age, refractive error, and topographic parameters.

Results

Among the HRT parameters, the mean values for rim area, rim volume, cup disk area ratio, and classification showed significant differences among POAG, NTG, and OH eyes. The mean values for cup area, cup volume, mean RNFL thickness, and RNFL cross section area showed significant differences between POAG and NTG eyes, and NTG and OH eyes, however, not between POAG and OH eyes. Cup shape measure showed significant differences between POAG and OH, and NTG and OH eyes, but not between POAG and NTG eyes.

Conclusions

Our results suggest that POAG is distinguishable from NTG and OH based on evaluations of rim area and rim volume. Patients with NTG tend to have larger cupping, smaller rims, and thinner retinal nerve fiber layers as compared to POAG and OH patients. Thus, HRT topographic parameters are useful to differentiate patients with POAG, NTG, and OH.

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Fig. 1a–d.

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Acknowledgement

This study was supported in part by grants for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

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  1. Department of Ophthalmology, Kansai Medical University, 10-15 Fumizono, Moriguchi, 570-8507, Osaka, Japan

    Naoko Kiriyama, Akira Ando, Chieko Fukui, Hiroyuki Nambu, Maki Nishikawa, Hiroo Terauchi, Atsuko Kuwahara & Miyo Matsumura

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  1. Naoko Kiriyama
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  2. Akira Ando
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  3. Chieko Fukui
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  4. Hiroyuki Nambu
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Correspondence to Akira Ando.

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Kiriyama, N., Ando, A., Fukui, C. et al. A comparison of optic disc topographic parameters in patients with primary open angle glaucoma, normal tension glaucoma, and ocular hypertension. Graefe's Arch Clin Exp Ophthalmol 241, 541–545 (2003). https://doi.org/10.1007/s00417-003-0702-0

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  • DOI: https://doi.org/10.1007/s00417-003-0702-0

Keywords

  • Glaucoma
  • Optic Disc
  • Ocular Hypertension
  • Topographic Parameter
  • Early Glaucoma