Wydanie 1/2008

Ocena porównawcza tarczy nerwu wzrokowego w badaniach laserowej tomografii siatkówki (HRT) oraz optycznej koherentnej tomografii (OCT) u pacjentów z normalnym ciśnieniem, podwyższonym ciśnieniem, jak również jaskrą, krótkowzrocznością i fizjologicznie duż

The Comparative Assessment of the Optic Nerve Head with Heidelberg Retina Tomography (HRT II) and Optical Coherent Tomography (OCT) in Patients with Normal IOP, Ocular Hypertension, Glaucoma, Myopia and Large Optic Discs

Dorota Raczyńska, Jarosław Woźniak, Dorota Chomińska-Dorn, Krystyna Raczyńska

Katedra i Klinika Chorób Oczu Akademii Medycznej w Gdańsku Kierownik: prof. dr hab. n. med. Krystyna Raczyńska


Summary: Purpose: To evaluate diagnostic usefulness and compare morphometric results of Optical Coherent Tomography (Stratus – OCT) and Heidelberg Retinal Tomography (Heidelberg Enginering GmBH-HRT) in patients with normal IOP, ocular hypertension, glaucoma, myopia and large optic discs.
Design: Randomized study.
Material and Methods: A total number of 70 eyes of 50 individuals were enrolled in the study. Each patient underwent complete ophthalmologic examination. 10 patients with wrong fixation, astigmatism larger than 2 D, myopia larger than -5 D and cataract were excluded from the study. We divided patients into 5 study groups: 1-control group with healthy eyes and negative glaucoma history (n = 12), 2 – myopic eyes group (n = 10), 3 – large optic disc group (n = 7 eyes), 4 – ocular hypertension group (n = 10), 5 – open-angle glaucoma group (n = 31). Diagnostic assessment of stereoscopic optic disc analysis and RNFL thickness was performed with Heidelberg Retinal Tomography – HRT II (Heidelberg Engineering GmBH, Dossenheim, Germany) and Optical Coherence Tomography (Carl Zeiss Meditec Inc, Dublin, California, USA, Stratus, 4.0) and disc area, cup area, rim area and C/D area ratio were analyzed and verified using t-Student test and a measure of linear correlation (Pearson’s linear correlation coefficient).
Results: In analyzed 5 study groups we observed mostly positive correlation of mean optic nerve head parameters measured with HRT and OCT. t-Student analysis excluded possibility of comparison of 1 parameter measured with both devices. Disc area was statistically larger in OCT than in HRT. The diagnostic performances of HRT II and OCT were significantly influenced by the severity of glaucomatous damage.

Keywords: confocal scanning laser ophthalmoscopy – HRT, Optical Coherent Tomography – OCT, optic nerve topography, glaucoma, ocular-hypertensive eyes, myopia, large optic disc.


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