Programm                 "Degeneration und Regeneration– Grundlagen, Diagnostik und Therapie"


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Abstract
Abstract

Comparison between Retinal Thickness in Optical Coherence Tomography (OCT) and Oedema Index Measured by Heidelberg Retina Tomorgraph II (HRT II)

Vehr S., Schnurrbusch U. E. K., Wolf S.
Universität Leipzig, Klinik und Poliklinik für Augenheilkunde, Leipzig

Purpose: The oedema area in macular hole is a main cause for visual loss, the dimension of metamorphopsia and central scotoma. New techniques of examination (HRT II, macular oedema module and OCT) offer a quantitative evaluation of the central retinal macular oedema. We reviewed, if there is a correlation between the oedema index measured by HRT II at the rim of the macular hole and the retinal thickness in OCT examination at the same point.
Method: We analysed HRT II (Heidelberg Engineering, Dossenheim) and OCT examinations of 18 patients with macular hole. Interactive measurements of retinal thickness at the temporal rim of the macular hole by OCT and the oedema index in the same area by HRT II were made.
Results: We report data of 18 patients (15 women, 3 men) with macular hole. Anatomically, 9 eyes had a stage 2 macular hole and 9 eyes stage 3 macular hole according to the classification by Gass. Visual acuity ranged between 0,04 and 0,6. The mean oedema index at the temporal rim of the macular hole in HRT II was 3,4 ± 1,1 and retinal thickness in the same area 389 mm ± 88 mm. The outcome of measurements by the two different methods did not show any correlation. However we found correlation between visual acuity and oedema index (R=0,6) but not between retinal thickness in OCT and visual acuity.
Conclu


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