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Proceedings Paper

Modification of the Heidelberg retinal laser tomograph and flowmeter to allow measurements in supine patients
Author(s): Karen Margaret Joos; Chasidy Singleton; Jin-Hui Shen; Wensi Sun; Denis M. O'Day
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Paper Abstract

Purpose: To determine if the Heidelberg Retinal Laser Tomograph (HRT) and Flowmeter (HRF) can be modified to obtain images in supine patients. Methods: A mount was customized to securely attach the Heidelberg scanning head to an operating microscope stand. This mount was designed to allow rotation for viewing of the macula or optic nerve head region in either eye. The HRT was used to acquire 3 consecutive images of the optic nerve head in supine subjects to obtain a mean topographic image. The HRF was then used to obtain capillary flow measurements in supine subjects. Results: The optic nerve area in either the right or left eye can be safely and easily visualized with the modified Heidelberg system in supine patients for evaluation of optic nerve head topography or capillary flow. However, the configuration of the Heidelberg scanning head requires the images to be taken 180 degrees from the normal orientation of the scanning head to the patient's body. Therefore, the images are rotated 180 degrees from those taken in upright subjects. This must be considered when analyzing the data. Conclusion: The Heidelberg Retinal Tomograph and Flowmeter are capable of acquiring images in supine subjects. However, these images are rotated 180 degrees.

Paper Details

Date Published: 1 June 1998
PDF: 4 pages
Proc. SPIE 3246, Ophthalmic Technologies VIII, (1 June 1998); doi: 10.1117/12.309437
Show Author Affiliations
Karen Margaret Joos, Vanderbilt Univ. (United States)
Chasidy Singleton, Vanderbilt Univ. (United States)
Jin-Hui Shen, Vanderbilt Univ. (United States)
Wensi Sun, Vanderbilt Univ. (United States)
Denis M. O'Day, Vanderbilt Univ. (United States)


Published in SPIE Proceedings Vol. 3246:
Ophthalmic Technologies VIII
Pascal O. Rol; Karen Margaret Joos; Fabrice Manns, Editor(s)

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