This study evaluates the vessel density of choriocapillary vascular network in eyes affected by choroidal osteoma and in eyes complicated by choroidal neovascularization, using optical coherence tomography angiography.

The choroidal osteoma is a rare benign tumor of choroid, it is bilateral in 10%-25% of cases, affecting usually young women. Previous studies evaluated the morphologic characteristics of tumor-related vasculatures, described as a seafun vascular networks, but none focused on study of vessel density of coriocapillary.

The aim of this study is to investigate the potential role of the optical coherence tomography angiography (OCTA) in evaluating the choriocapillary vessel density in order to individuate the changes of this vascular network that may influence the onset of choroidal neovasculariztion.

Therefore, OCTA could be useful in the clinical management of the choroidal osteoma

Inclusion Criteria:

• age older than 50 years
• diagnosis of choroidal osteoma
• absence of history of vitreoretinal and vascular retinal diseases

Exclusion Criteria:

• age younger than 50 years
• no diagnosis of choroidal osteoma
• presence of history of vitreoretinal and vascular retinal diseases

The participans were older than 50 years with choroidal osteoma. They did not present other ophthalmological diseases.