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Diseases and Conditions A to G

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Term
Definition
Age-Related Macular Degeneration   is an eye condition that leads to the deterioration of the macula, leading to loss of central vision.  
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AIDS/HIV   is a virus that causes the body’s immune system to break down, leading to illness from infections. affect the eye by making the eyes susceptible to infection.  
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Albinism   is a group of hereditary conditions that affect how the body produces or distributes pigment. have a reduced amount or absence of pigment in their eyes, hair and skin.  
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Allergies   are a condition when the eyes react to an irritant or allergen, making them red, itchy, tearful and swollen.  
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Amblyopia   is poor vision in an eye that did not develop normal sight during childhood. Lazy eye  
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Anisocoria   when your pupils are different sizes.  
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Astigmatism   is an imperfection in the curvature of your cornea — or in the shape of the eye’s lens, causing blurry or distorted vision.  
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Avastin   is the brand name for bevacizumab, a drug injected into the eye to slow vision loss in people who have “wet” age-related macular degeneration (AMD).  
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Bacterial Keratitis   is an infection of the cornea, often due to improper care and cleaning of contact lenses or from injury to the cornea.  
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Bell’s Palsy   is a temporary condition that causes certain muscles in your face to weaken or become paralyzed.  
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Black Eye   is bruising around the eye due to an injury to the face or head.  
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Blepharitis   is inflammation (swelling) of the eyelids, where the upper and lower eyelids become coated with oily particles and bacteria near the base of the eyelashes. It causes irritation, itchiness, redness, and stinging or burning of the eye.  
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Blocked tear duct   is when the eye’s drainage system for tears is either partially or completely obstructed. Tears cannot drain normally, causing a watery, irritated or chronically infected eye.  
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Branch Retinal Vein Occlusion (BRVO)   is a blockage of the small veins in the retina.  
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Cataracts   is a clouding of the eye’s normally clear lens, causing vision problems.  
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Cellulitis   is a bacterial infection of tissue that can affect both the eyes and skin.  
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Central Retinal Vein Occlusion (CRVO)   is a blockage of the main vein in the retina.  
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Central Serous Retinopathy   fluid builds up under the retina and distorts vision.  
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Chalazia and Styes   is a lump on the eyelid caused by enlarged oil-producing gland in the eyelid / is also a lump on the eyelid, usually caused by an infected eyelash follicle.  
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Choroidal Neovascular Membranes   are new blood vessels that grow beneath the retina and disrupt vision. Is associated with many serious eye diseases.  
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Coloboma   describes conditions where normal tissue in or around the eye is missing from birth.  
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Color Blindness   occurs when you are unable to see colors in a normal way. Can happen when someone cannot distinguish between certain colors, usually between greens and reds, and occasionally blues.  
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Conjunctivitis (Pink Eye)   is swelling of the conjunctiva — the thin, filmy membrane that covers the inside of your eyelids and the white part of your eye (sclera).  
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Contact Lens-Related Eye Infections   The most common infection related to contact lens use is keratitis, an infection of the cornea (the clear, round dome covering the eye's iris and pupil).  
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Corneal Abrasion   is a scratch or scrape on the eye’s cornea.  
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Corneal Dystrophies   are a group of relatively rare genetic eye disorders in which abnormal material often accumulates in the cornea.  
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Corneal Erosion   affects the cornea. The outermost layer of the cornea is the epithelium. When the epithelium does not stay attached correctly to the corneal tissue below  
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Corneal Laceration   is a cut on the cornea.  
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Corneal Ulcer   is an open sore on the cornea.  
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Cytomegalovirus retinitis   is a serious viral eye infection of the retina, the light-sensing nerve layer that lines the back of the eye. It is most often found in people with compromised immune systems.  
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Diabetic Retinopathy   is a common diabetic eye disease caused by changes in retinal blood vessels.  
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Dilating Eyedrops   (called mydriatics) are used to dilate, or enlarge, the pupils of your eyes so that your eye doctor can see the inside of your eye in detail.  
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Drusen   are yellow deposits under the retina. It likely does not cause age-related macular degeneration (AMD), their presence increases a person’s risk of developing AMD.  
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Dry Eye   is a condition where the eyes don’t produce enough tears or the right quality of tears to be healthy or comfortable.  
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Eye Cancer   is a malignancy that starts and grows in your eye. A malignancy is a group of cells that are cancerous and that can spread to other sites in the body or invade and destroy tissues.  
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Eye Lymphoma   Primary intraocular lymphoma (PIOL) involves the retina, vitreous and optic nerve. Eighty percent of cases involve both eyes; many people with PIOL will develop lymphoma within the part of the brain called the cerebrum.  
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Farsightedness (hyperopia)   is a refractive error, which means the eye does not bend or refract light properly. Distant objects look clear but close objects appear blurred.  
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Floaters and Flashes   are shadows cast on the eye’s retina from clumps of gel or cells inside the vitreous / are flashes of light that you see when the vitreous gel pulls or rubs the retina.  
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Fuchs' Dystrophy   is a progressive eye disease affecting the cornea, causing certain cells to deteriorate and die off, making corneal cells swollen and cloudy.  
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Fungal Keratitis   is an infection of the cornea, often due to improper care and cleaning of contact lenses or from injury to the cornea.  
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Giant Cell Arteritis   is a swelling of the arteries, the bv that carry blood away from heart. When they swell, it reduces the bf through these vessels. It affects the arteries in the neck, upper body and arms. Can cause sudden, painless vision loss.  
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Glaucoma   is a disease that damages the eye’s optic nerve.  
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Graves' Disease   is an autoimmune disorder that leads to over activity of the thyroid gland. The gland produces hormones that regulate your body’s metabolism. When it affects the eyes, the condition is known as thyroid eye disease.  
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