Artikel
Topographic changes at the optic disc in POAG
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Autoren
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I. Marjanovic
- Institute of eye diseases KCS, Belgrade, Serbia
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D. Kontic
- Institute of eye diseases KCS, Belgrade, Serbia
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P. Hentova-Senicanic
- Institute of eye diseases KCS, Belgrade, Serbia
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V. Markovic
- Institute of eye diseases KCS, Belgrade, Serbia
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M. Bozic
- Institute of eye diseases KCS, Belgrade, Serbia
| Veröffentlicht: | 18. September 2006 |
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Gliederung
Text
Objective
To evaluate average topographic changes of optic disc segments in POAG, using serial optic disc images obtained by scanning laser tomography.
Methods
Sixty-six eyes of 33 patients with POAG were imaged using the Heidelberg Retina Tomograph II (HRT II ) three or more times during follow-up periods of 6 years in the Institute of eye diseases in Belgrade. Disc progression was determined by regression analysis of global and segmental changes in optic disc parameters. Every patient was tested by OCTOPUS G1 once a year. Imaged optic disc parameters with scanning laser tomography were: rim area(ra), cup/disc(c/d), rim volume(rv), mean RNFL thickness(mRNFL). Imaged segments of the optic disc were: global(G), tepmporal(T), temporal superior(TS), temporal inferior(TI), nasal(N), nasal superior(NS) and nasal inferior(NI).
Results
Imagining 6 segments of the optic disc through 4 parameters using the Heidelberg Retina Tomograph II (HRT II ) three or more times during follow-up periods of 6 years, our results were: Most frequently progression in c/d area was in nasal superior (NS) segment and thining of mRNFL was in nasal inferior (NI) and nasal superior (NS) segment. Most intensive decreasing of rim volume was in nasal inferior (NI) and of rim area was in temporal (T) segment.
Conclusions
Disc progression in our study was mostly in nasal segment (NS and NI). Optic disc changes in POAG over time can be determined with HRT II using regression analysis.
