J Korean Ophthalmol Soc.
2001 Dec;42(12):1778-1786.
Effect of the Superior Cervical Sympathectomy on Experimental Retinal Branch Vein Occlusion in Rabbits
- Affiliations
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- 1Department of Ophthalmology, St. Paul's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
- 2Department of Ophthalmology, Kangnam St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea.
- 3St. Mary's Eye Clinic, Korea. kmj2361@hanmail.net
Abstract
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PURPOSE: Superior cervical sympathectomy was performed on argon laser induced experimental branched retinal vein occlusion in rabbits to evaluate its effect on retinal blood flow.
METHODS
Branched retinal vein occlusion (BRVO) was induced by argon laser in 30 eyes (15 pigmented rabbits) divided into three groups. One and 3 weeks after inducing BRVO, superior cervical sympathectomy was performed in Group 1 (early) and 2 (late), respectively. Group 3 was left as a control group. Fundus photography, fluorescien angiography and Heidelberg Retinal Flowmetry (HRF) were performed prior to and after sympathectomy. Pathologic examination was done after enucleation.
RESULTS
The sympathectomy groups, especially Group 1 (early), showed better recovery of retinal blood flow, volume, and velocity.
CONCLUSIONS
Sympathetic block appears to produce dilatation of the retinal blood system, and we suggest stellate ganglion block technique as an effective treatment modality on human beings with BRVO.
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