miosis eye definition
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Miosis Miosis: Introduction. Miosis: A condition which is characterized by the contraction of the pupil of the eyes. More detailed information about the symptoms, causes, and treatments of Miosis is available below. Symptoms of Miosis.
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aniseikonia noun, Ophthalmology. 1. a defect of vision in which the images at the retinas are unequal in size. aniseikonia. 1. n. A condition in which the shape and size of the ocular image differ in each eye. Discover our greatest slideshows.
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Ptosis / Drooping Eyelid: A Guide To Ptosis There are two types of ptosis: acquired and congenital. Congenital ptosis is present at birth and is usually due to the lack of development of eyelid muscles called levators. Acquired ptosis is the most common type, and is usually due to the muscles that elevate the eyelid becoming weak, thin, or stretched with age.
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Miosis Miosis or myosis (/maɪˈoʊ sɪs/, from Ancient Greek μύειν, mūein, to close the eyes) is excessive constriction of the pupil. The opposite condition, mydriasis, is the dilation of the pupil. Anisocoria is the condition of one pupil being more dilated than the other.
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Ptosis Overview Ptosis can occur in one eye or both eyes at the same time. Ptosis may be caused by normal aging, injury to the eye or an eye disease. In most cases, it is caused by weakness of the eyelid muscle or eye nerve problems. Sometimes the condition is present at birth, referred to as congenital ptosis. If left untreated, congenital ptosis may prevent normal vision development, and may increase the risk of developing lazy eye.
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Eyelid Ptosis (drooping eyelid) is when the upper eyelid droops or sags due to weakness or paralysis of the levator muscle (responsible for raising the eyelid), or due to damage to nerves controlling the muscle. It can be a manifestation of the normal aging process, a congenital condition or due to an injury or disease.
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myopia myopia. n. 1. (Pathology) inability to see distant objects clearly because the images are focused in front of the retina; short-sightedness. [C18: via New Latin from Greek muōps short-sighted, from mūein to close (the eyes), blink + ōps eye].mī-ō′pē-ə). myopia. top: normal eye with light focused on the retinabottom:myopic eye with light focused in front of the retina.
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Abnormal movement of eyelid Ptosis is a drooping or falling of the upper eyelid. The drooping may be worse after being awake longer, when the individual's muscles are tired. This condition is sometimes called lazy eye, but that term normally refers to amblyopia.
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- Ptosis (pronounced “toe-sis”) is the medical term for drooping of the upper eyelid(s). This lowering of the upper eyelid margin may cause a reduction in the field of vision when the eyelid either partially or completely obstructs the pupil.Patients with ptosis often have20difficulty keeping their eyelids open.here are many causes of ptosis including age related weakening of the muscle, congenital weakness, trauma, or sometimes neurologic disease. As we age, the tendon that attaches the levator muscle, the major muscle that lifts the eyelid can stretch and cause the eyelid to fall.
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- New Latin esōtropia: Greek esō, within; see en in Indo-European roots + Greek tropē, a turning; see –tropic. noun. A form of strabismus in which one or both of the eyes deviate inward. Also called crossed eyes, cross-eye. New Latin esōtropia: Greek esō, within; see en in Indo-European roots + Greek tropē, a turning; see –tropic. Origin of esotropia. Related Forms: 1  es′o·trop′ic.
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Aniseikonia Not reviewed. Aniseikonia is a condition that results from an excessive difference in the prescription between the eyes. This causes a difference in image size perceived between the eyes from unequal magnification, and can manifest with symptoms of headache, dizziness, disorientation, and excessive eye strain. 1 Disease Entity 1.1 Disease.
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- When used colloquially, 'myopia' can also refer to a view on or way of thinking about something which is—by extension of the medical definition—hyper-focused and fails to include a larger context beyond the focus.igh-degree myopia, or severe myopia, is defined as -6 diopters or worse. The term myopia is Ancient Greek: μυωπία, muōpia, from myein to shut (like a mole-mys/mus in Greek) – ops (gen. opos) eye, look, sight), literally meaning trying to see like a mole (mys/mus).
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Eyelid Twitching | Causes | Treatment DEFINITION of Myokymia. Myokymia is the medical name for eyelid twitching. Myokymia is spontaneous contracture of the eyelid muscles, usually the orbicularis oculi muscle. Myokymia is usually unilateral (one eye only) and more often involves the lower eyelid instead of the upper. The condition is not serious and is usually self limiting.
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- Miosis or myosis, /maɪˈoʊ sɪs/, from Ancient Greek μύειν, mūein, to close the eyes, is a term with various definitions, which generally include constriction of the pupil. The opposite condition, mydriasis, is the dilation of the pupil. Anisocoria is the condition of one pupil being more dilated than the other.
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syndrome Ptosis is the drooping or sagging of a body part [4]. Ptosis of the upper eyelid (upper lid ptosis, blepharoptosis, drooping upper eyelid, droopy-lid-syndrome) is defined as abnormally low-lying upper eyelid margin in primary gaze, resulting in narrowing of the palpebral opening and fissure and covering part of the eye.
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phenomenon Marcus Gunn's pupillary phenomenon with unilateral optic nerve or retinal disease, a difference between the pupillary reflexes of the two eyes; on the affected side there is abnormally slight contraction or even dilatation of the pupil when a light is shone in the eye.
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Miscellaneous Eye Problems: Q&A Strabismus is also sometimes called crossed eyes (when the eyes turn in) or walleye (when they turn out). You may have heard someone describe an eye that is not straight as a lazy eye, but that is not what lazy eye means. It means that a person's vision is weak or lazy. The medical term for lazy eye is amblyopia (say: am-blee-OH-pee-uh).
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Droopy Eyelids (Ptosis): Causes and Natural Remedies Droopy eyelids, or ptosis, is a condition characterized by the sagging of the upper eyelid. The condition is also called blepharoptosis, and there are several names for the various ways it can affect you.
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What Is Eye Miosis? The black circle in the center of your eye is your pupil. It changes size thousands of times a day. When you're in dim light, it gets bigger to let more light in. When you're in bright light, it shrinks to protect your eye and keep light out. When your pupil shrinks (constricts), it's called miosis. If your pupils stay small even in dim light, it can be a sign that things in your eye aren't working the way they should. This is called abnormal miosis, and it can happen in one or both of your eyes.
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- Ocular myositis Eye muscle myositis is an idiopathic inflammation of the extraocular muscles in the absence of thyroid disease, ocular myasthenia gravis. A NATOMY: There are six EOMs the medial, lateral, superior and inferior recti, the superior and inferior oblique.ongenital fibrosis of the extraocular muscles prevents the normal development and function of these muscles. As a result, affected individuals are unable to move their eyes normally. Most people with this condition have difficulty looking upward, and their side-to-side eye movement may also be limited.
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ten Optic Neuritis. An inflammation of the optic nerve that can cause a sudden loss of vision, usually in one eye; blurred vision; and eye pain. Optic neuritis is the most common MS-related vision problem. Approximately half of people with MS will have at least one episode of optic neuritis. Frequently, it is the first symptom of MS.
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A - Z eye conditions Keratoconus is a vision disorder that occurs when the normally round cornea (the front part of the eye) becomes thin and irregular (cone) shaped. This abnormal shape prevents the light entering the eye from being focused correctly on the retina and causes distortion of vision.ystagmus is a vision condition in which the eyes make repetitive, uncontrolled movements, often resulting in reduced vision. These involuntary eye movements can occur from side to side, up and down, or in a circular pattern.
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- Crossed eyes, also called strabismus, is a condition in which your eyes do not line up properly. If you have this condition, your eyes look in different directions, with each eye focusing on a different object.The disorder is very common in children, affecting four percent of children age 6 and younger.trabismus is a disorder in which the eyes do not line up in the same direction. People with strabismus cannot look at the same object or place with both eyes at the same time.
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- A common eye muscle condition in which both eyes do not easily turn inward to see close objects and at near distances. In other words, the eyes do poorly (insufficiency) with the inward turning action (convergence) required for successful close viewing (such as, at reading or computer distance). This visual condition is the leading cause of eyestrain, blurry vision, double vision (diplopia), and/or headaches.
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masked facies A masklike facies with infrequent eye blinking and decreased facial expressiveness. thalassemic facies Enlargement of the cheek bones and forehead in people with thalassemia major.
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ptosis ptosis (plural ptoses) The prolapse of a bodily organ, especially drooping of the eyelid or the breasts.