Eye Diseases and Conditions
Glossary of eye diseases and various eye condiions and complications.
Exophthalmos
Exophthalmos is a condition characterized by bulging of the eyes.
Exophthalmos is a condition characterized by bulging of the eyes.
Choroidal Melanoma
Choroidal melanoma is a cancer of the eye that develops in a part of the eye called the choroid. Learn the full definition of choroidal melanoma.
Choroidal melanoma is a cancer of the eye that develops in a part of the eye called the choroid. Learn the full definition of choroidal melanoma.
Subconjunctival Hemorrhage
A subconjunctival hemorrhage is a broken blood vessel in the eye.
A subconjunctival hemorrhage is a broken blood vessel in the eye.
Eyelid Margin Disease
Eyelid margin disease is a constant inflammation of the eyelids.
Eyelid margin disease is a constant inflammation of the eyelids.
Phosphene
A phosphene is a phenomenon of seeing light without light actually entering the eye.
A phosphene is a phenomenon of seeing light without light actually entering the eye.
Corneal Ulcer
A corneal ulcer is an opening, sore or erosion in the cornea that may cause blindness if severe and left untreated.
A corneal ulcer is an opening, sore or erosion in the cornea that may cause blindness if severe and left untreated.
Vernal Conjunctivitis
Vernal conjunctivitis is a seasonal inflammation of the outer lining of the eyes.
Vernal conjunctivitis is a seasonal inflammation of the outer lining of the eyes.
Allergic Conjunctivitis
An inflammation of the conjunctiva of the eye due to an allergen.
An inflammation of the conjunctiva of the eye due to an allergen.
Eye Allergy
Eye allergies can produce many annoying symptoms, including itchy, red eyes.
Eye allergies can produce many annoying symptoms, including itchy, red eyes.
Keratoconus
Keratoconus can cause significant distortion of vision.
Keratoconus can cause significant distortion of vision.
Behcet's Disease
Behcet's disease often affects the eye.
Behcet's disease often affects the eye.
Blocked Tear Duct
Newborn babies sometimes have blocked tear ducts.
Newborn babies sometimes have blocked tear ducts.
Red Eye
Red eye may be caused by many things.
Red eye may be caused by many things.
Face Blindness
Face blindness (or prosopagnosia) is a disorder that makes someone unable to recognize faces.
Face blindness (or prosopagnosia) is a disorder that makes someone unable to recognize faces.
Low Vision
Low vision is vision loss that cannot be corrected, resulting in limited sight ability.
Low vision is vision loss that cannot be corrected, resulting in limited sight ability.
Diplopia
Diplopia is double vision.
Diplopia is double vision.
Asthenopia
Asthenopia is a collection of symptoms that causes eye fatigue or tiredness.
Asthenopia is a collection of symptoms that causes eye fatigue or tiredness.
Floaters
Small particles that move in the vitreous, the substance that fills the cavity of the eye.
Small particles that move in the vitreous, the substance that fills the cavity of the eye.
Glaucoma
A disease of the optic nerve in which vision is lost usually due to increased pressure inside the eye.
A disease of the optic nerve in which vision is lost usually due to increased pressure inside the eye.
Toxic amblyopia
Toxic amblyopia is reduction in visual acuity believed to be due to a toxic reaction in the orbital portion of the optic nerve. It is caused by multiple toxic and nutritional factors and probably other unknown factors.
Toxic amblyopia is reduction in visual acuity believed to be due to a toxic reaction in the orbital portion of the optic nerve. It is caused by multiple toxic and nutritional factors and probably other unknown factors.
Hypertensive retinopathy
A disease of the retina and retinal blood vessels that occurs because of uncontrolled high blood pressure.
A disease of the retina and retinal blood vessels that occurs because of uncontrolled high blood pressure.
Retinitis pigmentosa
An eye disease in which there is damage to the retina. The damage worsens over time. People with this condition have problems with night vision and peripheral vision.
An eye disease in which there is damage to the retina. The damage worsens over time. People with this condition have problems with night vision and peripheral vision.
Photokeratitis
A burn of the cornea (the clear front surface of the eye) by ultraviolet rays.
A burn of the cornea (the clear front surface of the eye) by ultraviolet rays.
Pinguecula
A common, non-cancerous growth of the mucous membrane lining the eyeball and underside of the eyelids (conjunctiva).
A common, non-cancerous growth of the mucous membrane lining the eyeball and underside of the eyelids (conjunctiva).
Pterygium
A non-cancerous, wedge-shaped growth of the clear, thin tissue that lays over the white part of the eye (conjunctiva).
A non-cancerous, wedge-shaped growth of the clear, thin tissue that lays over the white part of the eye (conjunctiva).
Myokymia
An involuntary eyelid muscle contraction, typically involving the lower eyelid, less often the upper eyelid.
An involuntary eyelid muscle contraction, typically involving the lower eyelid, less often the upper eyelid.