Black Eye – Definition, Symptoms and Treatment

Definition of Black Eye and Symptoms Black Eye – bleeding into the tissues around the eye resulting from trauma to the area, such as a blow or surgical operation. As with any other bruise, the bleeding causes swelling and discoloration. The most significant concerns with a black eye are damage to the eye or fractures of the orbital […]

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Episcleritis eye inflammation

What is Episcleritis and definition Episcleritis – INFLAMMATION of the episclera, the membrane that covers the sclera (fibrous outer layer, the “white,” of the EYE). Most episcleritis is idiopathic (occurs for unknown reasons), though the condition sometimes accompanies AUTOIMMUNE DISORDERS such as RHEUMATOID ARTHRITIS and REITER’S SYNDROME. Episodes are self-limiting though may recur over time, with each episode of inflammation […]

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Nystagmus – definition, causes and treatment

Nystagmus definition Nystagmus – involuntary movements of the eyes, usually rapid and repetitive. Nystagmus can be congenital or acquired; in either circumstance it is a symptom of underlying disorders rather than itself a condition. Nystagmus nearly always indicates VISION IMPAIRMENT; if congenital, the impairment may improve or completely resolve with age. Vision impairment in adults depends on […]

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Retinoblastoma – Definition and Treatment

Definition of Retinoblastoma Retinoblastoma is a cancerous tumor of the retina that most often occurs in children. Most retinoblastomas are hereditary and develop in early childhood, usually by age four. Some retinoblastomas are the result of new germline mutations though are not hereditary. Treatment in such cases is surgery to remove the eye (enucleation), with placement of […]

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Blepharitis and causes

Definition of Blepharitis Blepharitis is inflammation of the eyelids. the most common causes are infection and irritation. Anterior blepharitis is inflammination of the outer surface of the eyelid, typically along the rim at the base of the eyelashes. Posterior blepharitis affects the inner surface of the eyelid, typically resulting from blocked oil glands (meibomian glands) along the eyelid. Symptoms […]

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Exophthalmos – bulging outward of the eye

What is Exophthalmos and definition Exophthalmos – bulging outward of the EYE, sometimes called poptosis. Most exophthalmos results from Graves’s disease and is a classic symptom of this form of HYPERTHYROIDISM. Thyroidrelated exophthalmos results from swelling of the tissues around the eye and within the orbit that develops in reaction to the high levels of thyroid hormone present […]

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Ocular Herpes Simplex

What is Ocular Herpes Simplex and definition Ocular Herpes Simplex – an INFECTION of the eyes with HERPES SIMPLEX VIRUS 1 (HSV-1), which causes cold sores, or herpes simplex virus 2 (HSV-2), which causes GENITAL HERPES. The virus spreads to the eye to cause the initial infection via contamination from contact with an existing herpes sore elsewhere on […]

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Retinopathy – forms, symptoms and treatment

What is Retinopathy Dysfunction – Definition Retinopathy is a dysfunction of the RETINA in which new BLOOD vessels grow across the retina’s surface. This growth causes the death of photoreceptors, the specialized cells (rods and cones) in the retina that receive lightwaves and convert them to nerve impulses for transmission to the brain. The blood vessels are also delicate and prone […]

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Blepharospasm and Definition

Definition of Blepharospasm Blepharospasm – involuntary closure of the eyelid that results from dysfunction of or damage to the nerves that control the muscles of the eyelids. Episodes of closure may range from brief (a minute) to extended (several hours). Extended closure interferes with vision. Doctors do not know what causes blepharospasm, though it is a […]

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Eye Pain – sensations discomfort involving eye

Eye pain definition Eye Pain – sensations discomfort involving the EYE and its supporting structures. Pain may vary from scratchy irritation to intense and debilitating pain. Much eye pain in the form of burning and itching arises from minor and treatable causes that affect the structures around the eye rather than the eye itself. Eye pain that is […]

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