Primary Open-Angle Glaucoma Glossary of Terms

The following are health and medical definitions of terms that appear in the Primary Open-Angle Glaucoma article.

Ablation: Removal or excision. Ablation is usually carried out surgically. For example, su...

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Anterior: The front, as opposed to the posterior. The anterior surface of the heart is tow...

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Anterior chamber: The space in the eye that is behind the cornea and in front of the iris.

Anxiety: A feeling of apprehension and fear, characterized by physical symptoms such as pa...

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Aqueous humor: In medicine, humor refers to a fluid (or semifluid) substance. Thus, the aq...

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Argon laser: A laser with ionized argon as the active medium. Argon lasers are used for ph...

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Arthritis: Inflammation of a joint. When joints are inflamed they can develop stiffness, w...

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Atrophy: A wasting away or diminution. Muscle atrophy is a decrease in muscle mass, often ...

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Bleb: A bladder-like structure more than 5 mm in diameter with thin walls that may be full...

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Blind: 1. Unable to see. Without part or all of the sense of sight.
2....

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Blindness: Loss of useful sight. Blindness can be temporary or permanent. Damage to any p...

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Blood pressure: The blood pressure is the pressure of the blood within the arteries. It is...

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Blurred vision: Lack of sharpness of vision with, as a result, the inability to see fine d...

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Cataract: A clouding or loss of transparency of the lens in the eye as a result of tissu...

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Central retinal vein: The blood vessel that carries blood away from the retina of the eye.

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Chronic: In medicine, lasting a long time. A chronic condition is one that lasts 3 months ...

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Ciliary body: Part of the eye, the ciliary body is a circular structure just behind the ir...

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Conjunctiva: A thin, clear, moist membrane that coats the inner surfaces of the eyelids (p...

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Cornea: The clear front window of the eye, which transmits and focuses light into the eye....

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Corneal: Pertaining to the cornea, the clear front window of the eye that transmits and fo...

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Cryotherapy: Literally, "cold therapy." Cryotherapy, sometimes referred to as cryosurgery,...

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Cupping: 1. Cupping therapy is usually used as part of acupuncture or body work tre...

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Depression: An illness that involves the body, mood, and thoughts and that affects the way...

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Diabetes: Refers to diabetes mellitus or, less often, to diabetes insipidus. Diabetes mell...

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Diagnosis: 1 The nature of a disease; the identification of an illness. 2 A ...

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Dilation: The process of enlargement, stretching, or expansion. The word "dilatation" mean...

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Disc: Shortened terminology for an intervertebral disc, a disk-shaped piece of specialized...

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Drain: A device for removing fluid from a cavity or wound. A drain is typically a tube or ...

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Essential: In medicine, of unknown cause, as in essential hypertension (high blood pressur...

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Family history: The family structure and relationships within the family, including inform...

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Fiber: The parts of fruits and vegetables that cannot be digested. Fiber is of vital impor...

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Fundus: In medicine, the bottom or base of an organ. For example, the fundus of the eye is...

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Generic: 1. The chemical name of a drug. 2. A term referring to the chemical...

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Genetic: Having to do with genes and genetic
information.

Glaucoma: A common eye condition in which the fluid pressure inside the eyes rises becaus...

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Headache: A pain in the head with the pain being above the eyes or the ears, behind the he...

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Heart: The muscle that pumps blood received from veins into arteries throughout the body. ...

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Heart disease: Any disorder that affects the heart. Sometimes the term "heart disease" is ...

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High blood pressure: A repeatedly elevated blood pressure exceeding 140 over 90 mmHg. Chro...

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Hippocrates: (c.460-377BC) Great Greek physician on the Mediterranean island of Cos, who f...

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Humor: In medicine, a fluid or semifluid substance. For example, the aqueous humor is the ...

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Hypertension: High blood pressure, defined as a repeatedly elevated blood pressure exceedi...

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Implant: 1. To embed; to set in firmly. In embryology, the fertilized egg implants ...

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Incidence: The frequency with which something, such as a disease or trait, appears in a pa...

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Inflammation: A localized reaction that produces redness, warmth, swelling, and pain as a ...

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Injury: Harm or hurt. To harm, hurt, or wound. The word injure may be in physical or emot...

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Intraocular: In the eye. For example, intraocular pressure is the pressure within the eye....

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Intraocular pressure: The pressure created by the continual renewal of fluids within the ...

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Iris: The circular, colored curtain of the eye. The opening of the iris forms the pupil. T...

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Laser: A powerful beam of light that is used in some types of surgery to cut or destroy ti...

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Lens: The transparent structure inside the eye that focuses light rays onto the retina.

Microscope: An optical instrument that augments the power of the eye to see small objects....

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Migraine: Usually, periodic attacks of headaches on one or both sides of the head. These ...

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Migraine headache: The most common type of vascular headache involving abnormal sensitivit...

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Myopia: Nearsightedness, the ability to see close objects more clearly than distant objec...

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Nearsightedness: The ability to see near objects more clearly than distant objects. Also ...

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Nerve: A bundle of fibers that uses electrical and chemical signals to transmit sensory an...

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Obesity: The state of being well above one's normal weight.

Occlusion: The act of occluding. See: Occlude.

Ocular: Having to do with the eye.

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Open-angle glaucoma: Glaucoma is a condition of the eye that leads to progressive atrophy ...

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Ophthalmologist: A physician who practices ophthalmology.

Ophthalmology: The art and science of eye ?medicine.

Optic: Having to do with vision.

Optic disc: The circular area in the back of the inside of the eye where the optic nerve c...

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Optic nerve: The optic nerve connects the eye to the brain. The optic nerve carries the...

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Pain: An unpleasant sensation that can range from mild, localized discomfort to agony. Pa...

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Peripheral: Situated away from the center, as opposed to centrally located.

Peripheral vision: Side vision. The ability to see objects and movement outside of the di...

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Pharmacy: A location where prescription medications are sold. A pharmacy is constantly sup...

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Phthisis: A good trivia or crossword item. An over-consonanted Greek word meaning "a dwind...

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Prevalence: The proportion of individuals in a population having a disease or characterist...

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Probe: (1) In surgery, a probe is a slender flexible rod with a blunt end used to e...

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Prognosis: The forecast of the probable outcome or course of a disease; the patient's chan...

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Progressive: Increasing in scope or severity, advancing, or going forward. For example, a ...

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Prostaglandin: One of a number of hormone-like substances that participate in a wide range...

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Retina: The retina is the nerve layer that lines the back of the eye, senses light, and c...

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Retinal: Pertaining to the retina, the extraordinary layer of neurons (nerve cells) that ...

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Risk factor: Something that increases a person's chances of developing a disease. For exam...

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Rule out: Term used in medicine, meaning to eliminate or exclude something from considera...

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Shunt: 1) To move a body fluid, such as cerebrospinal fluid, from one place to another. 2...

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Spasm: A brief, automatic jerking movement. A muscle spasm can be quite painful, with the ...

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Stress: In a medical or biological context stress is a physical, mental, or emotional fact...

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Surgery: The branch of medicine that employs operations in the treatment of disease or inj...

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Therapy: The treatment of disease. Therapy is synonymous with treatment.

Tonometry: A standard eye test that is done to determine the fluid pressure inside the eye...

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Topical: Pertaining to a particular surface area. For example, a topical agent is applied ...

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Trauma: A physical or emotional injury.

Ultrasound: High-frequency sound waves. Ultra-sound waves can be bounced off tissues by us...

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Vein: A blood vessel that carries blood that is low in oxygen content from the body back t...

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Visual acuity: The clarity or clearness of vision, a measure of how well a person sees.

Visual field: The entire area that can be seen when the eye is directed forward, including...

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Visual field test: A test that measures the extent and distribution of the field of vision...

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