Conjunctivitis – Inflammation of The Conjunctiva

Definition of Conjunctivitis Conjunctivitis – an inflammation of the conjunctiva, or mucous tissue that lines the inside of the eyelids. There are many causes for conjunctivitis, commonly called pink eye, including infection (bacterial, viral, or fungal) and contact contamination such as due to pollen or substances in the air or on the fingers that irritate the tissues. Infectious conjunctivitis is highly […]

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Hyperopia – Farsightedness – Definition and Treatment

Definition of Hyperopia Hyperopia is a refractive error, commonly called farsightedness, in which the eye has difficulty focusing on near objects. Hyperopia results when the focal point of lightwaves entering the eye extends past the retina, causing the images the retina registers to be blurred. The refractive error occurs because the distance from the front to the back of […]

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Photophobia – Definition and Symptoms

Definition of Photophobia Photophobia- heightened sensitivity to bright light, usually the result of inflammation or irritation to structures of the eye or with mydriasis (extended dilation of the pupil). Photophobia causes discomfort in the eye ranging from a burning sensation to outright pain. Often there is excessive tearing and the eye becomes reddened in response to the irritation. In […]

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Xanthelasma – Definition and Removal

Definition of Xanthelasma Xanthelasma – deposits of fatty plaque that form blisterlike lesions on the eyelids, usually the upper eyelids near the corner of the nose. The lesions are yellowish in color and often indicate hyperlipidemia (elevated blood levels of cholesterol and triglycerides). Though harmless, the lesions can cause the eyelid to droop, obscuring vision when an upper […]

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Corneal Injury – Lacerations, Punctures, and Blunt Trauma to The Cornea

Definition of Corneal Injury Corneal Injury – lacerations, punctures, and blunt trauma to the cornea. because of its position, somewhat protruding at the front of the eye, the cornea is at risk for damage that can jeopardize vision. Corneal injuries require immediate medical attention. Any puncture or penetrating wound to the eye is a medical emergency. Loosely patch […]

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Iritis – inflammation of the iris

Definition of Iritis Inflammation of the iris, the muscle surrounding the pupil of the eye – may develop as a result of infection, such as conjunctivitis that spreads to involve other structures of the eye. Iritis also occurs as part of the inflammatory process in autoimmune disorders such as rheumatoid arthritis. The Symptoms of Iritis Include Irritation and a “gritty” […]

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Pinguecula – Causes and Symptoms

Definition of Pinguecula Pinguecula is a thickened area of the conjunctival tissue on the eye, usually forming on the inner (nose) side of the eye. A pinguecula may be clear, yellow, or gray in color, and develops slowly. It presents no threat to vision or the eye, and is more common in people over age 50. Symptoms […]

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Dacryocystitis – Inflammation of the lacrimal (tear) ducts

Definition of Dacryocystitis Dacryocystitis – inflammation of the lacrimal (tear) ducts, typically the nasolacrimal ducts in the corners of the eye near the nose . Dacryocystitis develops when there is a blockage of the lacrimal duct, which may result from dacryostenosis (narrowing of the lacrimal duct), infection, or chronic irritation such as might occur with allergic rhinitis or allergic conjunctivitis. Can […]

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Ischemic Optic Neuropathy – Damage Optic Nerve

Definition of Ischemic Optic Neuropathy Damage to the optic nerve resulting from insufficient blood supply, sometimes called “stroke” of the optic nerve. Ischemic optic neuropathy is occurs most commonly in people over age 55 and causes mild to complete vision impairment. There are two forms: arteritic, associated with giant-cell arteritis (an inflammatory disorder of the arteries that typically affects […]

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Presbyopia – Definition

Definition of Presbyopia Presbyopia is a progressive change in the eyes that occurs with aging, in which it becomes increasingly difficult to focus on near objects. Presbyopia occurs because the lens loses flexibility, limiting its ability to adjust between near and far focus. The lens becomes unable to contract to thicken in the center as near focus requires, […]

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