« View GlossaryThe clear, strong surface layer of the eye covering the iris and pupil. Articles featuring this term: 6 Reasons Why You Have Eye Pain6 Things to Know About Reading Your Eye Prescription11 Eye Care Tips for Healthy Vision3 Things to Know About a New Treatment for Retina Damage from Disease and Injury5 Things to Know About How Corneal Dystrophy Impacts VisionNew Lens for Cataract Patients Improves Vision, Eliminates Need for Prescription Glasses5 Ways New Technologies Could Improve Your Vision7 Things You Should Know About LASIK Eye SurgeryFour Reasons Why You Experience Blurred Vision7 ways to keep your eyes healthy« View Glossary