Anterior chamber - The space in the eye bounded in front by the cornea and behind by the iris. It is filled with aqueous humor.
Anterior uvea - The front portion of the uvea, made up of the iris and ciliary body.
Anterior uveitis - Inflammation of the iris and ciliary body.
Aqueous humor - The clear, watery fluid which fills the eye.
Blepharitis - Inflammation of the eyelids.
Blepharospasm - Spasm of the muscles that control the eyelids.
Cataract - An opacity of the lens or its capsule, or both.
Choroid - The part of the vascular layer of the eye (uvea) located at the back of the eye. It helps to nourish the retina. It is the posterior uvea.
Ciliary body - The part of the vascular layer of the eye (uvea) located between the iris and the choroid.
Conjunctiva - The mucous membrane lining the back of the eyelids and the front of the eye, except for the cornea.
Conjunctivitis - Inflammation of the conjunctiva.
Cornea - The transparent portion of the outer layer of the eye, which allows light to enter the eye. It attaches to the sclera.
Corneal ulceration - An open lesion or sore on the surface of the cornea.
Enucleation - Removal of the eye.
Epiphora - The abnormal flow of tears over the face.
Fibrous - Composed of cells that form tough, connective tissue.
Fluorescein dye - A special dye that is applied to the cornea that will not penetrate intact cornea or conjunctiva, but will adhere to and outline areas of ulceration.
Glaucoma - Increased ocular pressure resulting from altered flow of aqueous humor.
Globe - The eyeball.
Intraocular - Within the eyeball.
Iris - The colored, circular portion of the eye located behind the cornea. It is part of the uvea.
Keratitis - Inflammation of the cornea.
Keratoconjunctivitis - Inflammation of the cornea and conjunctiva.
Lacrimal apparatus - The structures in the eye responsible for tear production.
Lens - A transparent structure suspended in the front portion of the eye. It refracts light that passes through the cornea on its way to the retina.
Lens luxation - Displacement of the lens.
Miosis - Contraction of the pupil so that the pupil becomes small.
Miotic - A medication that causes the pupil to become small.
Mucoid - This is a general term for types of secretions that are made up of mucous materials.
Mucopurulent - A secretion or exudate that is made up of pus and mucous.
Mydriatic - A medication that causes the pupil to become large.
Mydriasis - A dilated pupil.
Nasolacrimal - The system of the eye responsible for proper drainage of tears out of the eye and into the inside of the nose.
Nictitans (nictitating membrane) - The third eyelid.
Ophthalmoscope - A device for studying the interior of the eyeball.
Optic nerve - The nerve that originates from the retina and carries light signals to the brain.
Posterior uvea - The portion of the uvea made up of the choroid.
Posterior uveitis - Inflammation of the choroid.
Pupil - The circular opening in the center of the iris through which light passes into the eye.
Proptosis - Prolapse of the eye.
Retina - The innermost coat of the eye, formed of cells sensitive to light.
Retinal degeneration - A progressive, pathological change that interferes with the function of the retina.
Schirmer tear test - A method of measuring tear production using small strips of absorbent paper placed into the lower corner of the eye.
Sclera - A layer of dense connective tissue that supports the eye. It is the white portion of the eye that connects to the cornea. The cornea and sclera make up the fibrous tunic of the eye.
Tonometry - The measurement of intraocular pressure.
Uvea - The portion of the eye which contains many blood vessels. It is comprised of the iris, ciliary body, and choroid. It is called the vascular tunic.
Uveitis - Inflammation of the uvea.
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