Ethambutol Optic Neuropathy
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 visual information from the eye to the ...
Rx Eye & Vision Care (A – Z)
Esthesioneuroblastoma
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 nose (the olfactory epithelium). It ...
Esotropia
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 "cross-eyed." Normally, both eyes work together ...
Erdheim–Chester Disease
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. These histiocytes are “foamy” because ...
Epithelial Sloughing in LASIK
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 after the laser vision correction ...
Epithelial Downgrowth Glaucoma
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 through a wound or surgical opening, grow ...
Epithelial Basement Membrane Dystrophy (EBMD)
Epithelial Basement Membrane Dystrophy (EBMD), also called map-dot-fingerprint dystrophy or anterior basement membrane dystrophy, is a common disorder of the front layer of the eye (the cornea). In ...
Episcleritis
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 covering (conjunctiva). When this layer ...
Epiretinal Cell Proliferation
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 these cells grow, they can make a thin ...
Epiretinal Membrane Disease
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 retina, especially over the macula, which is ...
Epidermolysis Bullosa
Epidermolysis Bullosa (EB) is not just one disease but a group of rare, usually inherited skin disorders that make the skin extremely fragile. People with EB develop blisters, sores, and skin tears ...
Epidemic Keratoconjunctivitis (EKC)
Epidemic keratoconjunctivitis is a very contagious eye infection that affects both the conjunctiva (the thin clear layer covering the white part of the eye and the inside of the eyelids) and the ...
Epicanthal Folds
An epicanthal fold is a skin fold of the upper eyelid that runs from the side of the nose toward the inner corner (medial canthus) of the eye, covering or partially covering that inner corner. It is ...
Epiblepharon
Epiblepharon is an eyelid condition, usually present from birth, where an extra fold of skin and muscle near the edge of the eyelid pushes the eyelashes inward or upward so they rub against the ...
Eosinophilic Granulomatosis with Polyangiitis (EGPA)
Eosinophilic Granulomatosis with Polyangiitis (EGPA), formerly called Churg-Strauss syndrome, is a rare disease where the body's immune system attacks its own small and medium-sized blood vessels, ...
Ocular Health Disorders
Ocular health disorders are problems or diseases that affect any part of the eye or the systems that help us see. These problems can start suddenly or slowly, can be mild or severe, and can affect ...
Enhanced S-Cone Syndrome (ESCS)
Enhanced S-Cone Syndrome (ESCS) is a rare inherited eye disease that affects the light-sensing cells in the retina. Normally, the human retina has rods (for dim light), and three types of cones: ...
Endophthalmitis After Cataract Surgery
Endophthalmitis is a serious infection or inflammation inside the eye. It happens when germs (like bacteria or fungi) get into the fluid spaces of the eye—the vitreous or aqueous—and cause a strong ...
Endophthalmitis
Endophthalmitis is a serious inflammation inside the eye, usually caused by an infection of the fluids and tissues within the eyeball—most often the vitreous and/or aqueous humor. It is an emergency ...
Endocapsular Hematoma
Endocapsular hematoma (ECH) is a rare bleeding problem inside the eye that happens when blood collects in the small space between an intraocular lens (IOL) and the posterior capsule of the natural ...
