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      • Record: found
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      Effects of Ocular Blood Flow Changes on the Efferent Activity of Cat Ciliary Nerves

      research-article
      ,
      Ophthalmic Research
      S. Karger AG
      Ocular blood flow, Ciliary nerves, Intraocular pressure, Carotid occlusion

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          Abstract

          The efferent activity of the short ciliary nerves was studied in 23 anesthetized cats. Spontaneous activity was recorded in all preparations, and 33% showed a rhythmic discharge. Ipsilateral common carotid occlusion (ICCO) at constant intraocular and arterial pressures changed the discharge frequency in 14 of 33 filaments. Of these, 13 filaments showed a decrease in their firing frequency whereas in only one the discharge increased. Contralateral common carotid occlusion (CCCO), at constant intraocular pressure, changed the firing frequency in 8 of 20 filaments: 5 of them showed a decrease in their discharge frequency, whereas in 3 of them the discharge increased. This occurred when systemic arterial pressure was allowed to increase. These results suggest the presence of an efferent pathway involved in the nervous modulation or control of intraocular blood flow, aqueous humor dynamics, and/or intraocular pressure.

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          Author and article information

          Journal
          ORE
          Ophthalmic Res
          10.1159/issn.0030-3747
          Ophthalmic Research
          S. Karger AG
          0030-3747
          1423-0259
          1985
          1985
          04 December 2009
          : 17
          : 4
          : 230-234
          Affiliations
          Departamento de Fisiologia y Bioquimica, Facultad de Medicina, Universidad de Vallodolid, Spain
          Article
          265377 Ophthalmic Res 1985;17:230–234
          10.1159/000265377
          4034157
          62995283-a835-4504-b984-e41da4257aa2
          © 1985 S. Karger AG, Basel

          Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

          History
          : 28 May 1984
          : 17 August 1984
          Page count
          Pages: 5
          Categories
          Original Paper

          Vision sciences,Ophthalmology & Optometry,Pathology
          Ocular blood flow,Intraocular pressure,Carotid occlusion,Ciliary nerves

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