Artikel
Localisation of the thinnest point of the cornea using topographical pachymetry of the Orbscan II system
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Autoren
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I. J. Limberger
- Heidelberg Research Group Intraocular Lenses and Refractive Surgery, Department of Ophthalmology, University of Heidelberg, Heidelberg
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M. P. Holzer
- Heidelberg Research Group Intraocular Lenses and Refractive Surgery, Department of Ophthalmology, University of Heidelberg, Heidelberg
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B. B. Entz
- Heidelberg Research Group Intraocular Lenses and Refractive Surgery, Department of Ophthalmology, University of Heidelberg, Heidelberg
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A. J. Reuland
- Heidelberg Research Group Intraocular Lenses and Refractive Surgery, Department of Ophthalmology, University of Heidelberg, Heidelberg
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G. U. Auffarth
- Heidelberg Research Group Intraocular Lenses and Refractive Surgery, Department of Ophthalmology, University of Heidelberg, Heidelberg
| Veröffentlicht: | 22. September 2004 |
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Gliederung
Text
Objective
US- and Laserpachymetry can only measure individual points on the cornea. The Orbscan II Topography system gives a topographical map of the thickness of the entire cornea.
Methods
Orbscan measurements were performed in 30 healthy volunteers (60 eyes) aged 57.9±20.9 years using the Orbscan II topography system.
Results
Average central corneal thickness was 572± 44.9μm, the corneal thickness at the thinnest point was 547.2±67.6μm. Localisation of thinnest point was in 48.2% of eyes the inferior temporal, in 23.2% the superior nasal, in 21.4% the superior temporal and in 7,1% the inferior nasal quadrant.
Conclusions
Central pachymetry data can deviate by 5-10% from the thinnest point of the cornea. The thinnest point of the corneal thickness is most frequently located in the inferior temporal quadrant.
