Ptosis (eyelid) - Wikipedi

  1. Ptosis, also known as blepharoptosis, 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 the condition amblyopia.If severe enough and left untreated, the drooping eyelid can cause other conditions, such as amblyopia or astigmatism
  2. Ptosis is a condition where you have drooping eyes. It happens to many people as they age, but kids can be born with it. WebMD tells you how you can treat it if it affects your vision
  3. Ptosis crutch. The ptosis crutch is a nonsurgical option that involves adding an attachment to the frames of your glasses. This attachment, or crutch, prevents drooping by holding the eyelid in place
  4. Ptosis or sagging of the female breast is a natural consequence of aging.The rate at which a woman's breasts drop and the degree of ptosis depends on many factors. The key factors influencing breast ptosis over a woman's lifetime are cigarette smoking, her number of pregnancies, gravity, higher body mass index, larger bra cup size, and significant weight change
  5. Ptosis Key Points. Drooping eyelids, or ptosis, is normally caused by aging; however, if it develops quickly see a doctor immediately as it may be a sign of a serious health condition. Ptosis can be caused by a stroke, certain types of cancer, a brain tumor or aneurysm, diabetes and rare muscle diseases
  6. Ptosis refers to a droopy eyelid, where the upper eye area lowers downward. Causes include genetics, eye surgery, and excessive rubbing. Treatment can involve surgery, but usually for cosmetic.
Case of a fixed and dilated pupil: acute anisocoria

Droopy Eyelid (Ptosis): 5 Causes of Drooping Eyelid

Sudden eyelid drooping (ptosis) is a possible sign of a stroke. Depending on the location of the stroke, one or both eyelids can be affected. If a stroke is the cause of eyelid drooping, other symptoms will often be present, such as one-sided weakness or blurry vision Ptoza (łac. ptosis) - opadnięcie powieki, objaw porażenia mięśni powieki oka. Schorzenie to jest wadą rozwojową spotykaną najczęściej u dzieci, występującą często rodzinnie. Objawia się jedno lub obustronnym opadnięciem powiek i częściowym przysłonięciem gałki ocznej Ptosis : complications possibles. Un ptosis, bien que bénin, peut entraîner parfois des conséquences néfastes sur la vision telles que : l'astigmatisme ; l'amblyopie (diminution de l'acuité visuelle) ou syndrome de l'œil paresseux. Après le traitement chirurgical, la convalescence est de mise et l'on pourra constater Understand What is Ptosis? How Ptosis happens? How to recognize Ptosis and How to treat it?Special Thanks to Dr Waleed Bin Naeem, Post Graduate trainee in Ey.. Ptosis en adultos. Los adultos desarrollan ptosis (llamada ptosis involutiva) cuando el músculo elevador se estira o se separa del párpado. Esto puede ser causado por el envejecimiento o una lesión ocular. A veces, la ptosis se produce como efecto secundario después de determinadas cirugías oculares

Ptosis is a condition where the eyelid starts to fall down below the normal level. Ptosis can be present in newborns due to genetics or it can develop over time due to the aging process. The condition can also be caused when you have problems with the muscle in the eyelid Ptosis neurogénica: Se caracteriza por la falta de estímulo nervioso en el músculo. Se suele dar en niños y recibe el nombre de Síndrome de Marcus Gunn. Ptosis mecánica: Se da cuando existe un quiste o tumor en el párpado superior, cosa que provoca una caída mecánica Aponeurotic ptosis is also referred to as involutional ptosis. This is the most common type of ptosis and is usually seen in elderly patients. It is the result of a disinsertion or dehiscence of the levator aponeurosis from its distal insertion in the eyelid

Ptosis surgery is an operation to tighten the muscle that lifts your upper eyelid. As you get older, the levator muscle that lifts your upper eyelid stretches and weakens, causing your eyelid to sag. If you have a sagging eyelid that is interfering with your vision, ptosis surgery can be an effective treatment to improve your vision Introduction. Ptosis is a lowering of the eyelid to below its normal position. The word 'ptosis' derives from the Greek 'πτωσις', which translates as 'to fall'. It is an abbreviation of 'blepharoptosis'—a fallen eyelid—but this longer version is now almost never used. The normal palpebral fissure measures 12-15 mm

Ptosis, also known as droopy eyelid, is the drooping of the upper eyelid. Ptosis is usually best corrected by surgery to restore the upper eyelid position. Non-surgical options to treat ptosis and hold the eyelid higher include ptosis props that can be attached to glasses, Botulinum Toxin injections and using scleral contact lenses Acquired ptosis can be caused by neurologic conditions that affect the nerves and/or muscles of the eye. These include myasthenia gravis, progressive external ophthalmoplegia, Horner syndrome, and third cranial nerve palsy. The ptosis may be combined with an eye movement disorder with resultant double vision. An eyelid mass can also cause ptosis Blephariphimosis, ptosis, and epicanthus inversus syndrome (BPES) is a complex eyelid malformation invariably characterized by four major features: blepharophimosis, ptosis, epicanthus inversus, and telecanthus. BPES type I includes the four major features and premature ovarian insufficiency (POI); BPES type II includes only the four major. Ptosis. 2. Functional anatomy • Levator palpebrae superioris (LPS): - is the primary muscle responsible for lid elevation. - It arises from the back of the orbit and extends forwards over the cone of eye muscles. - It inserts into the eyelid and the tarsal plate, a fibrous semicircular structure which gives the upper eyelid its shape Ptosis Definition Ptosis is the term used for a drooping upper eyelid. Ptosis, also called blepharoptosis, can affect one or both eyes. Description The eyelids serve to protect and lubricate the outer eye. The upper eyelid is lifted by a muscle called the levator muscle. Inside the back part of the lid is a tarsal plate which adds rigidity to the lid.

Ptosis: Droopy Eyelid Causes, Symptoms, and Treatmen

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  2. Ptosis is the drooping or sagging of a body part [].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
  3. Ptosis is a condition characterized by the drooping of the upper eyelid. While the symptoms of ptosis may seem pretty straightforward — it is in the title, after all — symptoms experienced in addition to a droopy eyelid could help indicate the source of the issue.. Ptosis symptoms. Symptoms of ptosis can be very mild and unnoticeable, or severe
  4. Blepharoptosis (ptosis) is a common but often overlooked sign that may serve as a sign/manifestation of other conditions, ranging from a mild and purely cosmetic presentation to a severe and occasionally progressive disorder.Ptosis may show an acute onset or may manifest as a chronic disorder. Its presentation may vary: unilateral versus bilateral, progressive versus non-progressive, isolated.
  5. Examples of how to use ptosis in a sentence from the Cambridge Dictionary Lab

Ptosis (breasts) - Wikipedi

Ptosis is the abnormal drooping of the upper eyelid to a level such that it covers part of the eye, restricting or obscuring vision. It is also called as 'drooping eyelid' or 'blepharoptosis. Definición de ptosis en el Diccionario de español en línea. Significado de ptosis diccionario. traducir ptosis significado ptosis traducción de ptosis Sinónimos de ptosis, antónimos de ptosis. Información sobre ptosis en el Diccionario y Enciclopedia En Línea Gratuito. s. f. MEDICINA Prolapso o caída de un órgano del cuerpo o de parte de él

Ptosis (or blepharoptosis) is a drooping or falling of the upper eyelid. Complete ptosis is due to complete oculomotor nerve palsy.Partial ptosis is due to a dysfunction of the sympathetic pathway leading to paralysis of Muller muscle.. Note that facial nerve paralysis prevents screwing of the eye Ptosis is a drooping of the upper or lower eyelid. This condition could be seen in all age groups and it has multiple etiologies. Congenital or acquired weakness of the levator palpebrae. Aponeurotic ptosis that can be involutive or postoperative. Aponeurotic ptosis is the most common type of acquired ptosis, it is also called senile or involutional ptosis because it occurs more frequently in the elderly as an involutional disorder The sections below will describe a few different types of ptosis. Aponeurotic ptosis. Aponeurotic ptosis is the most common form of droopy eyelid. It usually develops with age, often starting when. Le ptosis, ou ptôse palpébrale ou encore blépharoptôse, est la chute de la paupière supérieure, résultant d'un déficit du muscle releveur de la paupière supérieure (levator palpebrae), d'une désinsertion de ce muscle et/ou de son aponévrose, ou d'une cause mécanique (masse palpébrale supérieure).Il peut également être en lien avec une atteinte du muscle de Müller, rétracteur.

Ptosis-Behandlung: Was macht der Arzt? Diagnose. Der Arzt wird zunächst im Gespräch mit Ihnen Ihre Krankengeschichte erheben ().Dabei erkundigt er sich zum Beispiel, seit wann Sie das hängende Augenlid bzw. die hängenden Augenlider haben und ob sich eventuell das Herabhängen im Laufe des Tages verstärkt 名詞. ptosis ( countable かつ uncountable, 複数形 ptoses ) ( medicine) The prolapse of a bodily organ, especially drooping of the eyelid or the breasts . 1970, JG Ballard, The Atrocity Exhibition: There were many other factors to be taken into account: Miss West ' s age, the type of enlargement, whether the condition was one of pure. 1: Close your eyes. 2: Now gently place the index finger of each hand across each eyelid. 3: Now keep the elbows lifted and out to the sides of the body. 4: Now gently apply some pressure with the pads of your index fingers to your eyelids. 5: With some pressure still applied, try to open the eyes to a count of five To repair ptosis, the eye surgeon will make an incision in the crease of the upper eyelid skin, or on the inside of the eyelid where you can't see it. There. Lip ptosis can also be caused by trauma from burns or scarring or previous reconstructive surgical procedures. Less commonly, lip ptosis can be caused by nerve damage, Lyme disease, neurotoxin injections (think: Botox®, Dysport®, Jeuveau®, and Xeomin®), immune disorders, and Bell's Palsy (an oftentimes temporary paralysis)

Blepharoptosis, or ptosis, refers to the drooping or downward displacement of the upper eyelid. The levator muscle, its aponeurosis, and the superior tarsal muscle are responsible for upper eyelid resting position and elevation. When these structures are compromised, the resultant depressed eyeli.. Background: Cerebral ptosis is considered rare; it has been reported with unilateral, usually right hemispheric lesions. However, the frequency of cerebral ptosis in patients with strokes has not received systematic study. Objective: To determine the frequency of ptosis in patients with acute hemispheric stroke and to identify stroke features associated with ptosis Wat is een ptosis. Als de spier, die het bovenooglid omhoog trekt, niet goed functioneert, ontstaat een laagstand van het bovenooglid. De lidspleet wordt kleiner waardoor minder oogwit zichtbaar is (het oog wordt a.h.w. kleiner). Dit hangend ooglid wordt ook wel een ptosis (blefaro-ptosis) genoemd Ptosis. Unter einer Ptosis, auch Ptose genannt, verstehen Mediziner ein sichtbares Herabhängen eines oder beider oberen Augenlider.Grundsätzlich ist eine Ptosis nur ein Symptom und kann verschiedene Ursachen haben. Sie kann sich entweder bei Behandlung der Ursache selbst zurückbilden oder bedarf unter Umständen einer chirurgischen Korrektur Ptosis was defined in bilateral cases as marginal reflex distance of <2.5 mm in both eyes and in unilateral cases as either an MRD1 < 2.5 mm or MRD1 of >1 mm lower on one side. Asymmetry in brow.

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Ptosis Causes + 8 Natural Treatments for a Drooping Eyelid

Ptosis repair surgery corrects drooping of the upper eyelid known as ptosis (pronounced toe-sis), short for blepharoptosis. The procedure repositions the underlying muscles to lift the upper eyelid, unlike blepharoplasty eyelid surgery, which removes excess skin and fat.. It's most often performed by oculoplastic surgeons and ophthalmologists who specialize in eyelid surgery Generally, ptosis (drooping of the upper eyelid) is treated with eyelid surgery. In ptosis surgery — also called blepharoplasty ('BLEF-uh-row-plas-tee) — the muscles responsible for lifting the upper eyelid are repositioned to restore the lid to a more natural (elevated) position. Removal of excess skin and fat from the upper eyelid and surrounding tissue may also be involved Ptosis crutch For severe cases of ptosis in which vision is being obstructed by eyelids, a fairly noninvasive, nonsurgical method that can help is called a ptosis crutch, which is a physical. What is ptosis? It is a drooping or falling of the upper eyelid. The lid may droop only slightly, or it may cover the pupil entirely. Some patients with ptosis may have difficulty keeping their eyelids fully open and then the ptosis can restrict and even block normal vision

Blepharochalasis: ‘drooping eyelids that raised our

Droopy eyelid (ptosis): Causes, risk factors, and treatmen

Drooping Eyelids (Ptosis): 10 Causes, Treatments

Eyelid symptoms. Possible causes. Itchy, crusty or flaky after contact with something you're allergic to. contact dermatitis. Sticky, with red, itchy, watery eyes. conjunctivitis. Eyelids that stick together, crusty eyelashes, dry, red or irritated eyes. blepharitis or dry eye syndrome. Drooping or hooded eyelid Ptosis in infants and children is often due to a problem with the muscle that raises the eyelid. A nerve problem in the eyelid can also cause it to droop. Ptosis may also occur due to other conditions. Some of these include: Trauma at birth (such as from the use of forceps) Eye movement disorders. Brain and nervous system problems Ptosis is a condition of the eye that causes a drooping upper eyelid.This condition may affect one or both eyes and some individuals just a slight drooping and others are affected to the point they can barely see Ptosis del párpado izquierdo (ptosis unilateral). Daguerrotipo de un desconocido, tomado por William Bell en 1852. La ptosis palpebral, también denominada blefaroptosis o ptosis del párpado, es un descenso permanente del párpado superior. La palabra ptosis procede del griego πτῶσις, caída. Puede ser total o parcial, según impida. Eyelash ptosis is a condition characterized by the downward displacement of the eyelashes of the upper eyelid. Normally, eyelashes project anteriorly and superiorly, but in eyelash ptosis, eyelashes project inferiorly toward the visual axis (see below). This can result in cosmetic complaints, foreign body sensation, and visual field obstruction

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Ptoza - Wikipedia, wolna encyklopedi

Ptosis ( toe-sis) is a drooping of the upper eyelid. The lid may droop only slightly, or it may cover the pupil or eye entirely. Ptosis can affect one or both eyelids. In some cases, ptosis can restrict and even block normal vision. Sometimes ptosis is present at birth; in other cases it occurs later in life due to injury or disease Eyelid lift surgery (blepharoplasty) is done to repair sagging or drooping upper eyelids. In milder cases, it can be done to improve the appearance of the eyelids. In more severe cases, surgery may be needed to correct interference with vision. In children with ptosis, surgery may be needed to prevent amblyopia, also called lazy eye If ptosis is present with other neurologic deficits, imaging of the brain, orbits, or cerebrovascular system should be performed. An emergent CT angiography of the brain is necessary when ptosis is accompanied by other signs of a third nerve palsy. MRI of the brain with and without gadolinium is the imaging modality of choice to exclude.

Ptosis patients often complain of looking tired, enebriated or stoned. When ptosis is present on one side only, patients often dont like the asymmetry and lack of balance. Eyelid retraction is the opposite problem as ptosis, where the upper eyelid is too high Ptosis, a condition resulting in droopy eyelids or droopy brows, can cause vision impairment and make daily living challenging. Clear vision and healthy eyes require well-functioning eyelids; however, over time we can develop ptosis that restricts our field of vision and requires surgical intervention Pengertian Ptosis. Ptosis, atau blepharoptosis, adalah istilah yang digunakan untuk menggambarkan suatu kondisi di mana terjadi penurunan kelopak mata atas, baik sedikit maupun hingga menutupi area pupil mata.Keadaan ini dapat membatasi atau bahkan menghalangi penglihatan normal. Ptosis dapat ditemukan sejak lahir (congenital) ataupun di kemudian hari (acquired)

Ptosis. The indication for ptosis is based on the same preoperative criteria as those indicated above, namely the presence of normal or straight breast bases and conical breasts with a low areola (Fig. 33.6). However, ptosis correction involves a compromise between the shape obtained and scar minimization Congenital ptosis is an eyelid problem present at birth. Regardless of the cause, the face, and especially the eyes, are considered key to a person's appearance. The desire to correct the lack of muscle tone around the eyes is very common. Symptoms. Ptosis can affect vision regardless of age or cause of the condition

Ptosis may occur due to trauma, age or various medical conditions and it is always recommended to see a doctor if you think you may have this condition. Because eyelids can become slack and droop as we age, some suggest that exercising the muscles around your eyelids may help Funding or reimbursement of ptosis surgery and blepharoplasty within the healthcare setting has long been a contentious issue. 1 Various arbitrary guidelines have been issued by medical insurers.

Ptosis can sometimes be present at birth; this is known as congenital ptosis and is usually due to a defect in the upper eyelid muscle. However, more commonly it appears later in life, as an acquired ptosis. This can be the result of long-term contact lens wear, trauma or following othe Ptosis occurs due to the weakness in the muscle of the eyelids that is used for opening the eyes. People with this problem tend to use the muscle of their forehead, and their eyebrow area to support the weak eyelids. However, this causes deterioration of eyesight, astigmatism, and wrinkles on the forehead Ptosis and purpura simplex were co-inherited in members of a pedigree reported by Fisher et al.However, ptosis and purpura simplex segregated independently in two individuals, perhaps denoting linkage rather than a common genetic defect. There was male to male inheritance of ptosis in this family, excluding X linkage and mitochondrial inheritance Sometimes ptosis is an isolated problem that changes a person's appearance without affecting vision or health. In other cases, however, it can be a warning sign that a more serious condition is affecting the muscles, nerves, brain or eye socket. Ptosis that develops over a period of days or hours is more likely to signify a serious medical problem A side effect of the injection of botulinum toxin into the upper third of the face is ptosis or lid droop. A therapy recommended to treat ptosis resulting from administration of botulinum toxins A and B is Iopidine (apraclonidine 0.5 %) eye drops. Apraclonidine is an alpha2-adrenergic agonist, which

Ptosis is when the upper eyelid droops down over the eye. If the ptosis is severe, it may block vision. There is one main muscle that opens the eyelid (levator palebrae superioris). Another muscle helps the eye open even more (superior tarsal muscle). If there is a problem with either of these muscles or their nerves, ptosis can occur In ptosis, something goes wrong in this process, so one or both eyelids hang low. The problem could be: The brain or a nerve isn't working right. The nerves and the muscles have a connection problem. The eyelid-lifting muscles are weak or missing. The eyelid muscle isn't attached to the eyelid properly

Ptosis can affect anyone, at any age. It is more commonly associated with aging, but children are known to develop droopy eyelids, and may even be born with it. Ptosis is sometimes caused by trauma or a systemic medical disorder, and it can affect just one or both eyelids. It may be transient or can be permanent A drooping or sagging of the eyelid is medically known as ptosis or blepharoptosis. Drooping eyelids may occur on both sides (bilateral) or on one side only (unilateral), in which case it is more easily noticed. Congenital ptosis is eyelid drooping that is present at birth; when it develops later, it is referred to as acquired ptosis Ptosis has been reported after cataract, corneal, refractive (like Lasik), and glaucoma surgery. Experts aren't sure exactly why this is, though the types of instruments and anesthesia used by the. A Primer on Ptosis. Wesley Klejch, BS; Jesse M. Vislisel, MD; Richard C. Allen, MD, PhD. April 6 2015. Introduction. Blepharoptosis or ptosis (pronounced TOE-sis) is defined as drooping of the upper eyelid. Ptosis can be bilateral or unilateral and can be difficult to identify unless a proper exam is performed Fyzika 1 pro střední školy autor: Lepil Oldřich, Hýblová Renata, Bednařík Mila

Ptosis : causes, symptômes et traitements - Oorek

A drooping eyelid is called ptosis or blepharoptosis. Typically positioned approximately 0.5-1.0mm below the superior limbus, when the upper eyelid falls to a position that is lower than normal it is considered ptotic. In severe cases of ptosis, the drooping eyelid can cover part or all of the pupil and obstruct the visual axis, resulting in amblyopia Congenital ptosis is thought to result from failure of neuronal migration. A unique feature of congenital ptosis is that the ptotic lid is higher than normal in downgaze, in contrast to most acquired ptosis, with which the ptotic lid is lower than normal in downgaze. Review of old photographs can help confirm the long-standing nature of the ptosis

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Mild ptosis was defined as 2 mm or less, moderate ptosis was defined as 2-4 mm, and severe ptosis was defined as 4 mm or more lower than the desired upper eyelid level. 1 In bilateral cases, the. In cases of severe ptosis, the origin of the Müller muscle may be divided from the undersurface of the levator using a hot-tip cautery as a cutting instrument. The levator muscle may be held with a ptosis clamp if desired. With the muscle on stretch, the levator horns can be identified and divided

Ptosis can also be classified by etiology: myogenic, neurogenic, mechanical, traumatic, or aponeurotic. The latter is the subject of this article. Aponeurotic Ptosis is the most common type of acquired ptosis and the most common cause of ptosis overall. It is also known as senile or involutional ptosis, because it occurs most often in the. Brow ptosis is decent of the brow and brow fat pad and typically occurs with advancing age Disease. Brow ptosis occurs secondary to descent of the periorbital soft tissues of the brow and is commonly seen associated with upper eyelid dermatochalasis. Etiology and Pathophysiolog

Ptosis is a condition that occurs in both children and adults because of excess skin and a long or weak levator muscle in the eyelid, causing drooping eyelids. ( Learn More) Children may have congenital ptosis, which occurs very early in life. It may require medical treatment to reduce the risk of other poor vision problems like amblyopia ptosis; Considering older age, high BMI as risks for blepharoptosis in Korean patients. August 19, 2021 . A study suggests that for the general population, evaluation for blepharoptosis should be done at 66 years of age, or at 63 and 70 years for males and females, separately Rodin and Barkan (1935) recognized 4 types: (1) hereditary congenital ptosis, (2) hereditary ptosis with external ophthalmoplegia, (3) hereditary noncongenital ptosis, and (4) hereditary ptosis with epicanthus (see Rank and T, 1959).The second type is said to be the most frequent. On the other hand, Duke-Elder (1963) stated that at least 8 types of congenital ptosis are recognizable, of. Brow ptosis is caused by a relative over relaxation of the brow elevators. Remember the brows are held in position by a number of opposing muscles and the force of gravity. The frontalis muscle both supports at rest and moves the eyebrows up, while the glabella complex and the orbicularis oculi pull the brow down

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What is Ptosis? Ptosis is a drooping of the upper eyelid which covering the pupil partly. It takes place when the upper eyelid of an eye drops over the eye and covers the pupil, by dropping so much or a little Ptosis can occur later in life if the muscles or ligaments that normally raise the eyelid are weakened by injury or disease. Sometimes the drooping is a result of damage to the nerves that control the eyelid muscles. Most ptosis just happens with aging. As a person ages, the skin and muscles of the eyelids stretch and weaken

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Ptosis definition, a drooping of the upper eyelid. See more Ptosis describes drooping of one or both eyelids and can be congenital (present at birth) or acquired. If left untreated, ptosis and other eyelid problems can cause: Lazy eye (amblyopia): Inability of one eye to see well (in spite of glasses or other means Congenital ptosis also called congenital blepharoptosis, is a drooping eyelid that is present at birth or within the first year of life. Congenital ptosis is usually present at birth but may manifest within the first years of life. In ptosis, the upper eyelid falls to a position that is lower than normal

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Ptosis Surgery. Surgery to elevate the eyelid can correct ptosis in most people. NYU Langone doctors may recommend surgery if a droopy eyelid is significantly affecting your ability to see, or if your vision is not compromised but you would like to correct the eyelid for cosmetic reasons. Physicians at Hassenfeld Children's Hospital at NYU. nerve palsy with ptosis. application of ice for two min-utes will typically relieve ptosis, which differentiates it from ischemic palsies.4 orbital myositis is the inflammation of at least on Ptosis is an eye condition that is characterized by droopy eyelids. While mild ptosis only has aesthetic implications, more severe or degenerative ptosis can block the pupils of the eye and impair vision. Such a condition could require surgery to halt or even reverse the drooping of the eyelids Ptosis (pronounced toe-sis) refers to the drooping of the upper eyelid caused by a weakened muscle that is responsible for raising the eyelid. A person with ptosis is not able to adequately raise the eyelid and fully open the eye. This causes the edge of the upper eyelid to hang down too far, which creates a tired appearance or can obstruct vision Ptosis, drooping of the upper eyelid. The condition may be congenital or acquired and can cause significant obscuration of vision. In congenital ptosis the muscle that elevates the lid, called the levator palpebrae superioris, is usually absent or imperfectly developed. If severe and not correcte -ptosis: word element [Gr.], downward displacement. adj., adj -ptot´ic