Chalazion Eye – Treatment and Surgery

Definition of Chalazion Eye Chalazion eye – a painless, hard nodule that arises from a gland (meibomian or sebaceous) along the edge of the eyelid, the result of glandular secretions that granulate. A chalazion may extend deep into the structure of the eyelid. A chalazion sometimes forms at the site of a recurrent hordeolum (an infected eyelid […]

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Glaucoma – eye disease

Glaucoma Definition Glaucoma is a serious and progressive eye condition in which the cells at the front of the optic nerve where it intersects with the retina, the retinal ganglia, die, resulting in vision loss. Early diagnosis and treatment can minimize vision loss. Health experts estimate that 5 million Americans have glaucoma, though only about 2 million of them know […]

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Orbital Cellulitis and Treatment

Orbital Cellulitis Definition Orbital Cellulitis – inflammation and swelling of the tissues surrounding the eye, including the eyelids. Orbital cellulitis requires emergency medical attention. Delayed treatment can result in permanent vision loss. Causes of Orbital Cellulitis The most common causes of Orbital Cellulitis are infections that affect the eyelids such as hordeolum and blepharitis, dacryocystitis (infected tear duct), and infections of adjacent structures […]

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Toxic Optic Neuropathy – symptoms and treatment

Definition of Toxic Optic Neuropathy Toxic Optic Neuropathy – damage to the optic nerve, retina, and other structures of the eye as a side effect of medications or exposure to environmental or systemic toxins. Many substances can harm vision, and any substance that is a neurotoxin (damaging to the nervous system) has the potential to damage the optic nerve. Long-term […]

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Cicatricial Pemphigoid

Definition of Cicatricial Pemphigoid Cicatricial Pemphigoid – an autoimmune disorder in which painful blisters form on the inner surfaces of the eyelids (and may form on other mucus membranes, such as in the mouth and nose). Scar tissue that forms after the blisters heal continues to irritate the inner eyelids as well as the outer surface […]

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Graves’s ophthalmopathy – Changes in The Eye That Occur as a Result of Graves

Definition of Graves’s Ophthalmopathy Graves’s ophthalmopathy – changes in the eye that occur as a result of Graves’s disease, a form of hyperthyroidism, and occasionally as a result of other forms of thyroid disease. The most prominent feature of Graves’s ophthalmopathy is exophthalmos, an outward bulging or protrusion of the eyes that often is the first indication of […]

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Papilledema – Definition, Causes and Symptoms

Definition of Papilledema Papilledema – swelling of the optic disk, the point at which the optic nerve enters the retina, that results from increased pressure within the skull. Papilledema typically signals serious neurologic damage such as stroke or traumatic brain injury (tbi) that causes bleeding (hemorrhage), brain tumor, extreme hypertension, or inflammatory infection such as encephalitis and meningitis. Though papilledema […]

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Uveitis – Symptoms and Treatment

Definition of Uveitis Inflammation of the uveal structures of the eye, which include the iris, ciliary body, and choroid. Uveitis most commonly affects the front of the eye (anterior uveitis) though may involve specific segments of the eye or the uveal tract throughout the eye. Symptoms Symptoms can vary from mild to severe and may include blurred vision, photophobia (extreme […]

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Color Deficiency – vision impairment

Definition of Color Deficiency Color Deficiency a vision impairment in which the ability to distinguish certain, and rarely all, colors is impaired. Color deficiency represents a shortage of normal cones, the specialized cells on the retina that detect color. Cones contain photosensitive chemicals that react to red, green, or blue. The most common presentation of color deficiency, accounting for about […]

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Hordeolum – Stye – Causes, Symptoms and Treatment

Definition of Hordeolum Hordeolum is a bacterial infection of a gland or an eyelash follicle along the edge of the eyelid, commonly known as a stye. A hordeolum causes swelling, redness, pain, and a discharge that leaves a crusty layer on the eyelids during sleep. The doctor can usually diagnose hordeolum by its presentation. Blepharitis (infection of the inside […]

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