Refractory adult Coats disease treated with dexamethasone intravitreal implant: A case report

Coats disease is a sporadic, retinal vascular abnormality, causing blindness. Several interventional methods, including laser photocoagulation, have been proposed; however, the use of intravitreal dexamethasone in refractory Coats disease is not well described.

A 38-year-old man presented with a painless reduction in visual acuity in his right eye, commencing 15 days prior to initial assessment.

Clinical manifestations and multimodal imaging indicated Coats disease.

Retinal laser photocoagulation was performed in the nonperfused areas, 15 months later, the exudative retinal detachment, and macular edema remained, the patient was then treated with an intravitreal slow-release dexamethasone implant.

The exudative retinal detachment and macular edema had resolved, and the BCVA had also improved.

Dexamethasone intravitreal implantation was effective in treating refractory Coats disease.