Cystoid macular edema from niacin typically is not accompanied by fluorescein leakage on angiography.
Bressler
Neil M
NM
D002199:Capillary Permeability; D019587:Dietary Supplements / Q000009:adverse effects; D005451:Fluorescein Angiography; D006801:Humans; D008269:Macular Edema / Q000139:chemically induced* / Q000175:diagnosis; D009525:Niacin / Q000009:adverse effects*; D008517:Phytotherapy / Q000009:adverse effects; D012171:Retinal Vessels / Q000473:pathology
D009525:Niacin