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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Intravitreal triamcinolone injection for diabetic macular edema: a clinical and fluorescein angiographic case series.

BACKGROUND: A significant number of eyes with diabetic macular edema remain refractory to treatment despite numerous attempts at photocoagulation. Triamcinolone acetonide, a minimally water soluble steroid injected in suspension form, has been reported to be a well-tolerated agent for intravitreal injection, prompting a decrease in diabetic macular edema on optical coherence tomography. We report our experience with this treatment in 19 eyes with persistent diabetic macular edema. METHODS: We reviewed the charts of 16 patients (19 eyes) from a clinical practice with diabetic macular edema persistent after focal or grid laser photocoagulation. All eyes had received 4 mg of triamcinolone, injected into the vitreous cavity 3.5 mm posterior to the limbus. Fluorescein angiography was performed before and about 2 weeks after the injection. Snellen visual acuity and intraocular pressure (as determined with Goldmann applanation tonometry) were also measured before and after the injection. RESULTS: Fluorescein angiography showed marked improvement of macular edema in 4 eyes (21.0%), mild improvement in 10 eyes (52.6%) and no change in 5 eyes (26.3%); no patient had worsening of macular edema. Visual acuity improved by at least 1 line in 13 eyes (68.4%), by 2 or more lines in 5 eyes (26.3%), by 3 or more lines in 2 eyes (10.5%) and by 4 lines in 1 eye (5.3%); visual acuity remained unchanged in 5 eyes (26.3%) and deteriorated by 1 line in 1 eye (5.3%). Intraocular pressure elevation of 10 mm Hg or greater occurred in two eyes (10.5%) and was successfully treated with topical administration of 0.15% brimonidine.The triamcinolone was well tolerated, and there were no other ocular complications. INTERPRETATION: Intravitreal injection of triamcinolone has potential in the treatment of diabetic macular edema and warrants investigation in a randomized prospective clinical trial.[1]


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