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Delayed choroidal vascular filling after krypton laser photocoagulation.
American Journal of Ophthalmology
|February 15, 1985
Summary
Krypton red laser photocoagulation for macular subretinal neovascularization may cause delayed choroidal vascular filling. This finding, potentially due to choroidal vessel thrombosis, did not correlate with visual field deficits in patients.
Area of Science:
- Ophthalmology
- Retinal Diseases
- Vascular Imaging
Background:
- Subretinal neovascularization (SRNV) is a significant cause of vision loss.
- Krypton red laser photocoagulation is a treatment modality for SRNV.
- Understanding potential complications is crucial for patient management.
Observation:
- Four patients undergoing krypton red laser photocoagulation for macular SRNV were monitored.
- Follow-up fluorescein angiograms revealed wedge-shaped areas of delayed choroidal vascular filling.
- These areas were adjacent to and extended from the laser-treated sites.
Findings:
- No immediate or late fundus changes corresponded to the delayed filling areas.
- Visual field testing in two patients showed no functional deficit related to these areas.
- Delayed choroidal vascular filling is a potential, asymptomatic complication.
Implications:
- Deep choroidal energy absorption by the krypton wavelength may induce choroidal vessel thrombosis.
- This complication appears to be asymptomatic and transient.
- Further research is needed to fully elucidate the mechanism and clinical significance of this finding.