Study Status: Recruiting
Recruit Status: Recruiting
Study Type: Interventional
Official Title: Prospective Case Crossover Study to Assess Whether PDE5 Inhibitor Exposure in Men With Erectile Dysfunction Increases the Risk for the Development of Non-arteritic Anterior Ische
Brief Summary: The primary objective of this study is to determine whether the use of PDE5 inhibitors (vardenafil, sildenafil, or tadalafil) increases the risk for the development of NAION.