Eye Diseases and Conditions Slideshow Pictures Pink Eye Slideshow Pictures Laser Eye Surgery Pictures Dilator: A device used to stretch or enlarge an opening. Patients with scarring of the esophagus can require a dilator procedure to open the esophagus for adequate passage of food and fluids. From Eye Health Resources How's Your Eye Health?Diabetes and Your EyesEye Care for Diabetes Featured Centers When Prostate Cancer SpreadsEssential Tips to Manage DiabetesWhat Is Cystic Fibrosis? What Causes It? Health Solutions From Our Sponsors Kept Your Wisdom Teeth? Therapy at Home?