An eyelash or simply lash is one of the hairs that grow at the edge of the eyelid. An eyelid is a thin fold of skin that covers and protects an Eye. Eyelashes protect the eye from debris and perform some of the same function 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 or dust mite) is near the eye (which is then closed reflexively). Eyes are organs that detect Light, and send signals along the Optic nerve to the visual areas of the brain WikipediaManual of Style (spelling, articles should conform to one overall spelling style of English typically the one most linked to the article topic (if it is geographic A mouse (plural mice) is a small Animal that belongs to one Insects ( Class Insecta) are a major group of Arthropods and the most diverse group of Animals on the Earth with over a million described Dust is a general name for minute Solid particles with Diameters less than 500 micrometers. A reflex action, also known as a reflex, is an involuntary and almost instant movement in response to stimulus.
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Human eyelashes
The eyelashes of the embryo develop between the 7th and 8th week. Eyelashes take about seven to eight weeks to grow back if pulled out. Their color may differ from that of the hair, although they tend to be dark on someone with dark hair and lighter on someone with light hair.
The follicles of eyelashes are associated with a number of glands known as the Glands of Zeis and the Glands of Moll. A gland is an organ in an animal's body that synthesizes a substance for release such as Hormones or Breast milk, often into the Bloodstream Glands of Zeis are unilobar Sebaceous glands located on the margin of the Eyelid. Glands of Moll, also known as ciliary glands, are modified Apocrine Sweat glands that are found on the margin of the Eyelid.
Cosmetics
Long eyelashes are considered a sign of femininity in most if not all cultures. Accordingly, some women seek to enhance their eyelash length artificially to appear more feminine and sexually desirable. See also eyelash extensions. Like Hair extensions, eyelash extensions are a Cosmetic process whereby synthetic single fiber polyester thread like materials are applied to create a fuller
Kohl has been worn as far back as the Bronze Age to protect and enhance lashes. Kohl is a mixture of Soot and other ingredients used predominantly by Middle Eastern North African Sub-Saharan African and South Asian The term Bronze Age refers to a period in human cultural development when the most advanced Metalworking (at least in systematic and widespread use included techniques for
Complete eye makeup includes mascara, eyeliner and eye shadow to emphasize the eyes. Mascara is a cosmetic used to darken thicken and define Eyelashes Mascara comes in three forms liquid cake and cream Eye liner is a Cosmetic used to define the Eyes. It is applied around the contours of the eye to create a variety of aesthetic illusions Eye shadow is a cosmetic that is applied on the Eyelids and under the Eyebrows It is commonly used to make the wearer's eyes stand out or look more The twentieth century saw the beginning of convincing-looking false eyelashes, popular in the 1960s. Year 1960 ( MCMLX) was a Leap year starting on Friday (link will display full calendar of the Gregorian calendar.
Health
There are a number of diseases or disorders involving the eyelashes:
- Madarosis is the loss of eyelashes
- Blepharitis is the irritation of the lid margin (where eyelashes join the eyelid). A stye (ˈstaɪ or hordeolum (/ˌhɔrˈdiːələm/ is an infection of the Sebaceous glands at the base of the Eyelashes While they produce no lasting damage Blepharitis /ˌblɛfɚˈɑɪ̯tɪs/ is an Ocular Disease characterized by Inflammation of the Eyelid margins Eyelids are red and itching. The skin often becomes flaky. The eyelashes may fall.
- Distichiasis is the abnormal growth of lashes from certain areas of the eyelid. A distichia is an Eyelash that arises from an abnormal spot on the Eyelid of a dog
- Trichiasis is ingrown eyelashes
- Eyelashes may become infested with crab louse parasites
- An external hordeolum, or stye, is a purulent inflammation of infected eyelash follicles and surrounding sebaceous (Zeis) and apocrine (Moll) glands of the lid margin. Trichiasis is a medical term for ingrown Eyelashes This can be caused by Infection, Inflammation, Autoimmune conditions and trauma The pubic or crab louse (Phthirus pubis is a parasitic insect which spends its entire life on human hair and feeds exclusively on blood A stye (ˈstaɪ or hordeolum (/ˌhɔrˈdiːələm/ is an infection of the Sebaceous glands at the base of the Eyelashes While they produce no lasting damage Pus is a whitish-yellow yellow or yellow-brown substance produced during Inflammatory responses of the body that can be found in regions of Pyogenic bacterial
- Trichotillomania is a disorder that urges the sufferer to pull out scalp hair, eyelashes, etc. Trichotillomania (TTM or "trich" as it is commonly known is an impulse control disorder or form of Self-injury characterized by the repeated urge
- Demodex folliculorum (or the demodicid), is a small mite that lives, harmlessly, in eyelash and other hair follicles and around 98% of people have these mites living on them. Demodex is a Genus of tiny parasitic Mites that live in or near Hair follicles of Mammals About 65 species of Demodex Mites, along with Ticks belong to the subclass Acarina (also known as Acari and the class Arachnida Mites are among the most diverse and successful A hair follicle is part of the Skin that grows Hair by packing old cells together Occasionally they can cause blepharitis.
Eyelash and eyebrow transplant surgeries may be help to reconstruct or thicken lashes or eyebrow hair.
Animals
Lashes, being hair, are found in mammals. Mammals ( class Mammalia) are a class of Vertebrate Animals characterized by the presence of Sweat glands, including sweat glands Camels' lashes are remarkably long and thick, and giraffe's eyelashes are considered by some to be more beautiful than a human's. Camels are Even-toed ungulates within the Genus Camelus. The Dromedary, one-humped or Arabian camel has a single hump and the The giraffe ( Giraffa camelopardalis) is an African Even-toed ungulate Mammal, the tallest of all land-living Animal Species Horses, cows, and also ostriches, (vestigial feathers without barbs) feature eyelashes as well. The horse ( Equus caballus) is a hoofed ( Ungulate) Mammal, one of eight living species of the family Equidae. Cattle, colloquially referred to as cows, are domesticated Ungulates a member of the Subfamily Bovinae of the family The Ostrich ( Struthio camelus) is a large Flightless bird native to Africa (and formerly the Middle East) Barbs are a series of branches fused to the rachis (stem of a Feather.
Inherited eyelash problems are common in some breeds of dogs.
Eyelash vipers show a set of modified scales over the eyes which look much like eyelashes. Common names eyelash viper eyelash mountain viper Schlegel's viper more. In most biological nomenclature a scale ( Greek lepid, Latin squama) is a small rigid plate that grows out of an Animal
Hornbills have prominent feather eyelashes, an uncommon feature in birds. Hornbills ( family Bucerotidae) are a group of Birds characterized by a long down-curved bill sometimes with a casque on the upper mandible
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