• English
    • íslenska
  • English 
    • English
    • íslenska
  • Login
View Item 
  •   Home
  • Journal Articles, Peer Reviewed (Ritrýndar vísindagreinar)
  • English Journal Articles (Peer Reviewed)
  • View Item
  •   Home
  • Journal Articles, Peer Reviewed (Ritrýndar vísindagreinar)
  • English Journal Articles (Peer Reviewed)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Browse

All of HirslaCommunitiesAuthorsTitleSubjectsSubject (MeSH)Issue DateJournalThis CollectionAuthorsTitleSubjectsSubject (MeSH)Issue DateJournal

My Account

LoginRegister

Local Links

FAQ - (Icelandic)FAQ - (English)Hirsla LogosAbout LandspitaliLSH Home PageLibrary HomeIcelandic Journals

Statistics

Display statistics

Laser treatment and the mechanism of edema reduction in branch retinal vein occlusion

  • CSV
  • RefMan
  • EndNote
  • BibTex
  • RefWorks
Average rating
 
   votes
Cast your vote
You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
Star rating
 
Your vote was cast
Thank you for your feedback
Authors
Arnarsson, A
Stefansson, E
Issue Date
2000-03-01

Metadata
Show full item record
Citation
Invest. Ophthalmol. Vis. Sci. 2000, 41(3):877-9
Abstract
PURPOSE: To test a hypothesis on the physiological mechanism of the disappearance of macular edema after laser treatment. The hypothesis is based on the effect grid laser treatment has on retinal oxygenation and hemodynamics. It predicts that laser-induced reduction of macular edema is associated with shortening and narrowing of retinal vessels in patients with branch retinal vein occlusion (BRVO). METHODS: The study included 12 subjects, treated with argon laser photocoagulation for BRVO and macular edema. Fundus photographs taken at the time of diagnosis and again after laser treatment, were digitized, and diameter and segment length of retinal vessels was measured using NIH-Image program. RESULTS: Macular edema disappeared or was dramatically reduced in all cases after laser treatment. The diameter of occluded venules constricted to 0.81+/-0.02 (mean +/- SD, P = 0.019) of the prelaser diameter and adjacent arterioles constricted to 0.78+/-0.01 (P = 0.008). The laser treatment also led to shortening of the affected vessels. The final segment length of the occluded venules was 0.95+/-0.17 (P = 0.005) of the length before treatment. The corresponding value for the adjacent arterioles is 0.95+/-0.14 (P = 0.008). Control arterioles and venules in the same fundus did not change in either length or width. CONCLUSIONS: These results do not reject the authors' hypothesis that the disappearance of macular edema in BRVO can be explained by the effect the laser photocoagulation has on retinal oxygenation. Increased oxygenation causes vessel constriction and shortening and lower intravascular pressure, which reduces edema formation according to Starling's law.
Description
To access publisher full text version of this article. Please click on the hyperlink in Additional Links field
Additional Links
http://www.iovs.org/cgi/content/abstract/41/3/877
Collections
English Journal Articles (Peer Reviewed)

entitlement

Related articles

  • Efficacy of intravitreal triamcinolone for the treatment of macular edema secondary to branch retinal vein occlusion in eyes with or without grid laser photocoagulation.
  • Authors: Cakir M, Dogan M, Bayraktar Z, Bayraktar S, Acar N, Altan T, Kapran Z, Yilmaz OF
  • Issue date: 2008 Mar
  • Delayed absorption of macular edema accompanying serous retinal detachment after grid laser treatment in patients with branch retinal vein occlusion.
  • Authors: Ohashi H, Oh H, Nishiwaki H, Nonaka A, Takagi H
  • Issue date: 2004 Nov
  • Vitrectomy with or without arteriovenous adventitial sheathotomy for macular edema associated with branch retinal vein occlusion.
  • Authors: Yamamoto S, Saito W, Yagi F, Takeuchi S, Sato E, Mizunoya S
  • Issue date: 2004 Dec
  • Subthreshold grid laser treatment of macular edema secondary to branch retinal vein occlusion with micropulse infrared (810 nanometer) diode laser.
  • Authors: Parodi MB, Spasse S, Iacono P, Di Stefano G, Canziani T, Ravalico G
  • Issue date: 2006 Dec
  • Multiple laser treatments for macular edema attributable to branch retinal vein occlusion.
  • Authors: Esrick E, Subramanian ML, Heier JS, Devaiah AK, Topping TM, Frederick AR, Morley MG
  • Issue date: 2005 Apr

DSpace software (copyright © 2002 - 2021)  DuraSpace
Quick Guide | Contact Us
Open Repository is a service operated by 
Atmire NV
 

Export search results

The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.