Aug 6, 2025 · The cornea is the clear outer layer at the front of the eye. There are several common conditions that affect the cornea. Read about the types of corneal conditions, …

Sep 4, 2025 · If you have severe damage to your cornea (the clear front layer of your eye), doctors can replace the damaged part with healthy corneal tissue from a donor. Read about …

Dec 6, 2024 · It happens when a type of corneal cells called endothelial cells move from the cornea into the iris (the colored part of the eye). When these cells move, they can block eye …

Dec 6, 2024 · Corneal dystrophies are eye diseases that involve changes in the cornea (the clear front layer of your eye). Learn about keratoconus, Fuchs’ dystrophy, lattice dystrophy, and …

Mar 4, 2025 · Novel stem cell therapy repairs irreversible corneal damage in clinical trial Transplanting cells from a patient's healthy eye into the damaged eye safely restored corneal …

Aug 6, 2025 · Dry eye happens when your eyes don’t make enough tears to stay wet. Learn about the symptoms, causes, diagnosis, and treatment of dry eye.

Jun 26, 2019 · National Eye Institute (NEI)-supported researchers are always working to better understand, diagnose, and treat conditions that affect the cornea (the clear front layer of the …

Jan 8, 2025 · Uncover neural adaptations (such as plasticity) in related ocular pathologies including dry eye disease, photophobia (photoallodynia), ocular surface itch, corneal burns, …

Apr 20, 2022 · All the different part of your eyes work together to help you see. Learn the jobs of the cornea, pupil, lens, retina, and optic nerve and how they work together.

Browse or search our resources about dozens of eye conditions and diseases. Get the basics about symptoms, diagnosis, and treatments — or go in depth to see all the details.