Haglund’s deformity is a condition where the back upper part of the heel bone (the posterosuperior calcaneus) becomes abnormally enlarged, forming a bony bump. ...

Eye injury diseases means any damage to the eye or the tissue around it caused by accidents, hits, chemicals, heat, radiation, sharp objects, or other force. ...

Eye banking is a system of collecting, checking, preserving, and giving donated eye tissue—especially corneas—to surgeons who transplant it into people who ...

Warthin tumor (also called papillary cystadenoma lymphomatosum or adenolymphoma) is a benign tumor that usually grows in the parotid salivary gland near the ...

Exudative retinal detachment, also called serous retinal detachment, is when fluid builds up under the retina without any tear or traction pulling it away. The ...

Extraocular Muscle Lymphoma is a rare type of cancer where lymphoma cells grow inside or around the muscles that move the eye (the extraocular muscles). These ...

Exposure keratopathy is damage to the clear front surface of the eye (the cornea) that happens when the eye is not fully protected or wetted by the eyelids and ...

Exotropia is a type of strabismus (eye misalignment) where one or both eyes turn outward, away from the nose. Sometimes it happens all the time, and sometimes ...

Exenteration is a very large, radical surgery done to remove all the organs and tissues from a body cavity when disease—most often cancer—is deeply stuck, has ...

Myopic Laser Vision Correction means using laser surgery to fix myopia, also called nearsightedness. Myopia is when your eye can see things that are close ...

Ethambutol optic neuropathy (EON) is damage to the optic nerve caused by the drug ethambutol, which is used to treat tuberculosis. The optic nerve carries ...

Esthesioneuroblastoma, also known as olfactory neuroblastoma, is a rare cancer that starts from the nerve cells responsible for smell in the upper part of the ...

Esotropia is a type of strabismus where one or both eyes turn inward toward the nose instead of pointing straight ahead. It is sometimes called being ...

Erdheim–Chester Disease (ECD) is a very rare illness where certain immune cells called histiocytes grow abnormally and build up in different parts of the body. ...

Epithelial sloughing during LASIK means that the outer layer of the cornea (the epithelium) becomes damaged, loosens, or comes off in patches during or shortly ...

Epithelial downgrowth glaucoma is a serious, rare eye condition in which surface epithelial cells—normally found on the outside of the eye—get inside the eye ...

Epithelial Basement Membrane Dystrophy (EBMD), also called map-dot-fingerprint dystrophy or anterior basement membrane dystrophy, is a common disorder of the ...

Episcleritis is an inflammation of the episclera, which is the thin layer of loose tissue just above the white part of the eye (the sclera) and under the clear ...

Epiretinal cell proliferation refers to the growth of extra cells on the very surface of the retina, especially over the central area called the macula. When ...

An epiretinal membrane (ERM), also called macular pucker or cellophane maculopathy, is a thin layer of scar-like tissue that forms on the surface of the ...