Programm & Abstracts                 "Innovationen in der Augenheilkunde"

Aktuelle Tagungsinformationen
   News and Updates

Anmeldung zur Tagung
   Registration
Hotelbuchung
   Hotel Registration
Grußwort
   Welcome address
Beteiligte Gesellschaften
   Societies involved
Eröffnung des Kongresses
   Opening Ceremony
Preise
   Awards
Wissenschaftliches Programm
   Scientific program
Posterpräsentationen
   Poster Presentation
Kurse
   Courses
Begleitende Veranstaltungen
   Collateral Events
Rahmenprogramm
   Social program
Jubiläumsparty
   Jubilee Party
DOG Information
   DOG Information
Allgemeine Informationen
   General Information
Autorenindex
   Index of Authors
Ausstellerliste
   Exhibitors
Sponsoren
   Sponsors
Teilnahmegebühren
   Registration fees
Impressum



DOG Homepage

Conventional Confocal Long-wavelength Laser Scanning Tomography of the Optic Nerve Head Supplemented by Confocal Short-wavelength Laser Scanning Tomography

1Schmitz-Valckenberg P., 2Kamppeter B. A.,
1Augenklinik im Evangelischen Stift (Koblenz)
2Ruprecht-Karls-Universität Heidelberg, Fakultät für klinische Medizin Mannheim, Augenklinik (Mannheim)

Purpose: The conventional confocal laser scanning tomography of the optic nerve head uses a long-wavelength laser (wavelength 670 nm) for imaging and measurement of the optic disc. Since the inner retinal layers can better be imaged by a short-wavelength light, it was the purpose of the present study to examine whether the conventional tomography can be supplemented by additionally using a short-wavelength laser scanning tomograph.
Methods: The study included 32 eyes of subjects who were examined with a conventional confocal laser scanning tomograph (Heidelberg Retina Tomograph, HRT). Additionally, a confocal scanning laser tomography of the optic disc was performed using a short-wavelength laser tomograph (wavelength: 549 nm) (Heidelberg Retina Angiograph, HRA), and color stereo optic disc photographs were taken.
Results: Without knowledge of the HRA image, mean optic disc area as measured by the HRT was 2.12±0.21 mm². With knowledge of the HRA image, measured mean optic disc area was 2.09±0.33 mm². It is a difference of 3.92±10.9%.
Conclusions: In this pilot study, the combination of a long-wavelength confocal laser scanning tomograph with a short-wavelength laser scanning tomograph gave similar results in optic disc area measurements as the disc measurements using a single long-wavelength confocal laser scanning tomograph. The results suggest that the combination of both techniques results in similar data, and that by increasing the contrast, use of a short-wavelength laser the morphometric examination of the optic disc is facilitated. It may have importance for a fully automatic optic disc analysis.

Zurück/Back