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Progressive capillary nonperfusion in temporal branch retinal vein obstruction
G C Brown1, A S Kimmel, L E Magargal
1Retina Vascular Unit, Wills Eye Hospital, Thomas Jefferson University, Philadelphia, Pennsylvania 19107.
Annals of Ophthalmology
|August 1, 1989
Summary
Some nonischemic temporal branch retinal vein obstructions (TBRVO) can progress to an ischemic pattern. This conversion increases the risk of neovascular complications in affected eyes.
Area of Science:
- Ophthalmology
- Retinal Vascular Diseases
Background:
- Retinal vein obstruction is a common cause of vision loss.
- Temporal branch retinal vein obstruction (TBRVO) can be ischemic or nonischemic.
- Progression from nonischemic to ischemic patterns can occur.
Purpose of the Study:
- To investigate the rate and characteristics of progression from nonischemic to ischemic temporal branch retinal vein obstruction (TBRVO).
- To identify factors associated with this progression.
Main Methods:
- Retrospective analysis of 31 eyes with nonischemic TBRVO.
- Initial and follow-up fluorescein angiography to assess capillary nonperfusion.
- Clinical course and demographic data were reviewed.
Main Results:
- Five eyes (16%) converted from nonischemic to ischemic TBRVO within 1 to 14 months (average 5.2 months).
- Progression was more common in males (P < 0.005).
- No significant differences in age, initial visual acuity, or comorbidities were found between progressive and nonprogressive groups.
Conclusions:
- Nonischemic TBRVO carries a risk of progression to an ischemic pattern.
- This progression is associated with an increased risk of neovascular complications.
- Early identification and monitoring are crucial for managing TBRVO.