radiation vasculopathy
Delayed vascular complications affecting retinal and choroidal circulation following radiation therapy for intraocular tumors.
Full Definition
Radiation vasculopathy represents a spectrum of delayed vascular complications that can affect both retinal and choroidal circulation following radiation therapy for intraocular malignancies. This condition typically develops months to years after treatment and is characterized by endothelial cell damage, capillary closure, and microangiopathy similar to diabetic retinopathy. Manifestations may include cotton-wool spots, hard exudates, retinal hemorrhages, microaneurysms, and in severe cases, neovascularization and vitreous hemorrhage. The severity and onset are related to the total radiation dose, fractionation schedule, and individual patient factors. Early detection through regular ophthalmoscopic examination and fluorescein angiography is essential for timely intervention with anti-VEGF therapy or laser photocoagulation.
Usage
Usage note: Document time interval from radiation treatment; distinguish from other microangiopathies.
In Context
- "The development of cotton-wool spots and hard exudates two years post-treatment was consistent with radiation vasculopathy." — Follow-up examination
- "Anti-VEGF injections were initiated to manage the macular edema associated with radiation vasculopathy." — Treatment plan