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Eyelash
An eyelash (also called lash) (Latin: ''Cilia'') is one of the hairs that grows at the edge of the eyelids. It grows in one layer on the edge of the upper and lower eyelids. Eyelashes protect the eye from debris, dust, and small particles and perform some of the same functions as whiskers do on a cat or a mouse in the sense that they are sensitive to being touched, thus providing a warning that an object (such as an insect) is near the eye (which then closes reflexively). The Ancient Greek word for eyelash is βλέφαρον (transliterated as blepharon), which is seen as a root in biological terms like ''Blephara''. Structure Development The eyelashes of the human embryo develop from the ectoderm between the 22nd and 26th week of pregnancy. Natural eyelashes do not grow beyond a certain length, and fall off by themselves without any need for trimming. Eyelashes take about seven to eight weeks to grow back if pulled out, but constant pulling may lead to permanent damage. Thei ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eyelash Extensions
Eyelash extensions are a cosmetics, cosmetic enhancement that involves attaching synthetic or natural hair fibers to the natural Eyelash, eyelashes to create a fuller, more dramatic look. They are applied by a professional using a specialized adhesive and can last for several weeks with proper care. Eyelash extensions are available in various lengths, thicknesses, and curvatures, and can be made from synthetic or natural materials. They offer a semi-permanent way to enhance the appearance of the eyes and can be a convenient alternative to traditional mascaras and false lashes. History In 1879, James D. McCabe wrote ''The National Encyclopædia of Business and Social Forms,'' where, in the section "Laws of Etiquette", he stated that eyelashes could be lengthened by cutting the ends with a pair of scissors. Other beauty books, such as ''My Lady's Dressing Room'' (1892) by Baronne Staffe and ''Beauty's Aids or How to be Beautiful'' (1901) by Countess C also state that the trimming of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madarosis
Madarosis is a condition that results in the loss of eyelashes, and sometimes eyebrows. The term "madarosis" is derived from the ancient Greek "madaros", meaning "bald". It originally was a disease of only losing eyelashes but it currently is the loss of both eyelashes and eyebrows. Eyebrows and eyelashes are both important in the prevention of bacteria and other foreign objects from entering the eye. A majority of patients with madarosis have leprosy, and it was reported that 76% of patients with varying types of leprosy had madarosis. Signs and symptoms Madarosis is not a critical or severe condition. The main symptom and sign of madarosis is the loss of hair from the eyelids, eyebrows, or eyelashes. Many symptoms are from other diseases involved. * Swollen, itchy, red, burning eyelids * Loss of hair from other parts of the body, mainly the scalp * Weight gain or palpitation if there is a thyroid problem Causes There are various causes of madarosis. * Ophthalmological cond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blepharitis
Blepharitis is one of the most common ocular conditions characterized by inflammation, scaling, reddening, and crusting of the eyelid. This condition may also cause swelling, burning, itching, or a grainy sensation when introducing foreign objects or substances to the eye. Although blepharitis by itself is not sight-threatening, it can lead to permanent alterations of the eyelid margin. The primary cause is bacteria and inflammation from congested meibomian oil glands at the base of each eyelash. Other conditions may give rise to blepharitis, whether they be infectious or noninfectious, including, but not limited to, bacterial infections or allergies. Different variations of blepharitis can be classified as seborrheic, staphylococcal, mixed, posterior or meibomitis, or parasitic. In a survey of US ophthalmologists and optometrists, 37% to 47% of patients seen by those surveyed had signs of blepharitis, which can affect all ages and ethnic groups. One single-center study of 90 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crab Louse
The crab louse or pubic louse (''Pthirus pubis'') is an insect that is an obligate ectoparasite of humans, feeding exclusively on blood. The crab louse usually is found in the person's pubic hair. Although the louse cannot jump, it can also live in other areas of the body that are covered with coarse hair, such as the perianal area, the entire body (in men), and the eyelashes (in children). Humans are the only known hosts of the crab louse, although a closely related species, '' Pthirus gorillae'', infects gorillas. The human parasite is thought to have diverged from ''Pthirus gorillae'' approximately 3.3 million years ago. It is more distantly related to the genus ''Pediculus'', which contains the human head and body lice and lice that affect chimpanzees and bonobos. Description An adult crab louse is about 1.3–2 mm long (slightly smaller than the body louse and head louse), and can be distinguished from those other species by its almost round body. Another distingui ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glands Of Zeis
Glands of Zeis are unilobar sebaceous glands located on the margin of the eyelid. The glands of Zeis service the eyelash. These glands produce an oily substance that is issued through the excretory ducts of the sebaceous lobule into the middle portion of the hair follicle. In the same area of the eyelid, near the base of the eyelashes are apocrine glands called the "glands of Moll". If eyelashes are not kept clean, conditions such as folliculitis may take place, and if the sebaceous gland becomes infected, it can lead to abscesses and styes. The glands of Zeis are named after German ophthalmologist Eduard Zeis (1807–68). See also * Meibomian gland * Moll's gland Moll's gland, also known as the gland of Moll or ciliary gland, is a modified apocrine sweat gland that is found on the margin of the eyelid. They are next to the base of the eyelashes, and anterior to the meibomian glands within the distal eyelid ... * List of specialized glands within the human integumentary syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gland Of Zeis
Glands of Zeis are unilobar sebaceous glands located on the margin of the eyelid. The glands of Zeis service the eyelash. These glands produce an oily substance that is issued through the excretory ducts of the sebaceous lobule into the middle portion of the hair follicle. In the same area of the eyelid, near the base of the eyelashes are apocrine glands called the "glands of Moll". If eyelashes are not kept clean, conditions such as folliculitis may take place, and if the sebaceous gland becomes infected, it can lead to abscesses and styes. The glands of Zeis are named after German ophthalmologist Eduard Zeis (1807–68). See also * Meibomian gland * Moll's gland Moll's gland, also known as the gland of Moll or ciliary gland, is a modified apocrine sweat gland that is found on the margin of the eyelid. They are next to the base of the eyelashes, and anterior to the meibomian glands within the distal eyelid ... * List of specialized glands within the human integumentary syst ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichiasis
Trichiasis ( , ) is a medical term for abnormally positioned eyelashes that grow back toward the eye, touching the cornea or conjunctiva. This can be caused by infection, inflammation, autoimmune conditions, congenital defects, eyelid agenesis and trauma such as burns or eyelid injury. Standard treatment involves removal or destruction of the affected eyelashes with electrology, specialized laser, or surgery. In many cases, removal of the affected eyelashes with forceps resolves the symptoms, although the problem often recurs in a few weeks when the eyelashes regrow. Severe cases may cause scarring of the cornea and lead to vision loss if untreated. Mild cases may not require treatment. Repeated cases of trachoma infection may cause trichiasis. Posterior misdirection of normal lashes most frequently affects the lower lid. In dogs Trichiasis in dogs is hair from the eyelid growing in the wrong direction and rubbing on the eye, causing irritation. It usually occurs at the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Distichiasis
A distichia is an eyelash that arises from an abnormal part of the eyelid. This abnormality, attributed to a genetic mutation, is known to affect dogs and humans. Distichiae usually exit from the duct of the meibomian gland at the eyelid margin. They are usually multiple, and sometimes more than one arises from a duct. They can affect either the upper or lower eyelid and are usually bilateral. The lower eyelids of dogs usually have no eyelashes. Distichiae usually cause no symptoms, because the lashes are soft, but they can irritate the eye and cause tearing, squinting, inflammation, corneal ulcers and scarring. Treatment options include manual removal, electrolysis, electrocautery, CO2 laser ablation, cryotherapy, and surgery. Commonly affected breeds In veterinary medicine, some canine breeds are affected by distichiasis more frequently than others: *Cocker Spaniel *Dachshund (especially the miniature longhaired Dachshund) *Bulldog *Pekingese *Yorkshire Terrier *Flat-Coated Ret ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kohl (cosmetics)
Kohl ( ar, كُحْل, kuḥl), kajal or kajol is an ancient eye cosmetic, traditionally made by grinding stibnite (Sb2S3) for use similar to that of charcoal in mascara. It is widely used in the Middle East, Caucasus and North Africa, South Asia, West Africa, and the Horn of Africa as eyeliner to contour and/or darken the eyelids and as mascara for the eyelashes. It is worn mostly by women, but also by some men and children. The content of kohl and various ways to prepare it differ based on tradition and country. Several studies have questioned the safety of kohl due to the dangers of lead poisoning. Name The Arabic name formed the Arabic root ''k-ḥ-l, “to apply kohl”''. Transliteration variants of Arabic dialectal pronunciation include ''kohl'' or ''kuhl''. The Arabic word cognates with Syriac-Aramaic word ܟܘܚܠܐ/כוחלא ''kuḥla''. Both words derived from Akkadian 𒎎𒋆𒁉𒍣𒁕 ''guẖlu(m)'' meaning stibium. The English word ''alcohol'' is a loan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trichotillomania
Trichotillomania (TTM), also known as hair-pulling disorder or compulsive hair pulling, is a mental disorder characterized by a long-term urge that results in the pulling out of one's own hair. A brief positive feeling may occur as hair is removed. Efforts to stop pulling hair typically fail. Hair removal may occur anywhere; however, the head and around the eyes are most common. The hair pulling is to such a degree that it results in distress and hair loss can be seen. The disorder may run in families. It occurs more commonly in those with obsessive compulsive disorder. Episodes of pulling may be triggered by anxiety. People usually acknowledge that they pull their hair, and broken hairs may be seen on examination. Other conditions that may present similarly include body dysmorphic disorder; however, in that condition people remove hair to try to improve what they see as a problem in how they look. Treatment is typically with cognitive behavioral therapy. The medication clo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moll's Gland
Moll's gland, also known as the gland of Moll or ciliary gland, is a modified apocrine sweat gland that is found on the margin of the eyelid. They are next to the base of the eyelashes, and anterior to the meibomian glands within the distal eyelid margin. These glands are relatively large and tubular-shaped. The glands of Moll are named after Dutch oculist Jacob Anton Moll (1832–1914). Glands of Moll empty into the adjacent lashes. Glands of Moll and Zeis secrete sebum that keeps lashes supple. The glands of Moll are prone to infection and blockage of its duct with sebum and cell debris. Blockage of the gland's duct causes swelling which can manifest itself as a stye. See also * Meibomian gland * List of specialized glands within the human integumentary system This article contains a list of glands of the human body List of endocrine and exocrine glands Skin There are several specialized glands within the human integumentary system that are derived from apocrine or se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebaceous Gland
A sebaceous gland is a microscopic exocrine gland in the skin that opens into a hair follicle to secrete an oily or waxy matter, called sebum, which lubricates the hair and skin of mammals. In humans, sebaceous glands occur in the greatest number on the face and scalp, but also on all parts of the skin except the palms of the hands and soles of the feet. In the eyelids, meibomian glands, also called tarsal glands, are a type of sebaceous gland that secrete a special type of sebum into tears. Surrounding the female nipple, areolar glands are specialized sebaceous glands for lubricating the nipple. Fordyce spots are benign, visible, sebaceous glands found usually on the lips, gums and inner cheeks, and genitals. Structure Location Sebaceous glands are found throughout all areas of the skin, except the palms of the hands and soles of the feet. There are two types of sebaceous glands, those connected to hair follicles and those that exist independently. Sebaceous ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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