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Squint
Squinting is the action of looking at something with partially closed eyes. Squinting is most often practiced by people who suffer from Refractive error, refractive errors of the eye who either do not have or are not using their glasses. Squinting helps momentarily improve their Visual perception, eyesight by slightly changing the shape of the eye to make it rounder, which helps light properly reach the Fovea centralis, fovea. Squinting also decreases the amount of light entering the eye, making it easier to focus on what the observer is looking at by removing rays of light which enter the eye at an angle and would need to otherwise be focused by the observer's faulty Lens (anatomy), lens and cornea. Pinhole glasses, which severely restrict the amount of light entering the cornea, have the same effect as squinting. It is a common belief that squinting worsens eyesight. However, according to Robert MacLaren, a professor of ophthalmology at the University of Oxford, this is nothi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glasses
Glasses, also known as eyeglasses (American English), spectacles (Commonwealth English), or colloquially as specs, are vision eyewear with clear or tinted lenses mounted in a frame that holds them in front of a person's eyes, typically utilizing a bridge over the nose and hinged arms, known as temples or temple pieces, that rest over the ears for support. Glasses are typically used for vision correction, such as with reading glasses and glasses used for nearsightedness; however, without the specialized lenses, they are sometimes used for cosmetic purposes. Safety glasses are eye protection, a form of personal protective equipment ( PPE) that are worn by workers around their eyes for protection. Safety glasses act as a shield to protect the eyes from any type of foreign debris that may cause irritation or injury; these glasses may have protection on the sides of the eyes as well as in the lenses. Some types of safety glasses are used to protect against visible and n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oscar Del Solar
Oscar, OSCAR, or The Oscar may refer to: People and fictional and mythical characters * Oscar (given name), including lists of people and fictional characters named Oscar, Óscar or Oskar * Oscar (footballer, born 1954), Brazilian footballer José Oscar Bernardi * Oscar (footballer, born 1991), Brazilian footballer Oscar dos Santos Emboaba Júnior * Oscar (Irish mythology), son of Oisín and grandson of Finn mac Cumhall Places in the United States * Oscar, Kentucky, an unincorporated community * Oscar, Louisiana, an unincorporated community * Oscar, Missouri, an unincorporated community * Oscar, Oklahoma, an unincorporated community * Oscar, Pennsylvania, an unincorporated community * Oscar, Texas, an unincorporated community * Oscar, West Virginia, an unincorporated community * Oscar Township, Otter Tail County, Minnesota, a civil township * Lake Oscar (other) Animals * Oscar (bionic cat), a cat that had implants after losing both hind paws * Oscar (bull) (d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Muscle Contraction
Muscle contraction is the activation of Tension (physics), tension-generating sites within muscle cells. In physiology, muscle contraction does not necessarily mean muscle shortening because muscle tension can be produced without changes in muscle length, such as when holding something heavy in the same position. The termination of muscle contraction is followed by muscle relaxation, which is a return of the muscle fibers to their low tension-generating state. For the contractions to happen, the muscle cells must rely on the change in action of two types of Myofilament, filaments: thin and thick filaments. The major constituent of thin filaments is a chain formed by helical coiling of two strands of actin, and thick filaments dominantly consist of chains of the Motor protein, motor-protein myosin. Together, these two filaments form myofibrils - the basic functional organelles in the skeletal muscle system. In vertebrates, Muscle cell#Muscle contraction in striated muscle, skele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Bridges Of Madison County (film)
''The Bridges of Madison County'' is a 1995 American romantic drama based on the 1992 bestselling novel of the same name by Robert James Waller. It was produced and directed by Clint Eastwood, who also starred in the film alongside Meryl Streep. The screenplay was adapted by Richard LaGravenese. Kathleen Kennedy was co-producer. It was produced by Amblin Entertainment and Malpaso Productions, and distributed by Warner Bros. Entertainment. ''The Bridges of Madison County'' is set in 1965 and features Italian war bride Francesca Johnson (Meryl Streep), who lives with her husband and two children on their Iowa farm. That year she meets ''National Geographic'' photojournalist Robert Kincaid (Clint Eastwood), who comes to Madison County, Iowa to photograph its historic covered bridges. With Francesca's family away for a short trip, the couple have an intense, four-day love affair. The film was released on 2 June 1995 and earned $182 million worldwide. It received widespread ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Good, The Bad And The Ugly
''The Good, the Bad and the Ugly'' (, literally "''The good, the ugly, the bad''") is a 1966 Italian epic spaghetti Western film directed by Sergio Leone and starring Clint Eastwood as "the Good", Lee Van Cleef as "the Bad", and Eli Wallach as "the Ugly". Its screenplay was written by Age & Scarpelli, Luciano Vincenzoni, and Leone (with additional screenplay material and dialogue provided by an uncredited Sergio Donati), Sir Christopher Frayling, The Good, the Bad and the Ugly audio commentary (Blu-ray version). Retrieved on 26 April 2014. based on a story by Vincenzoni and Leone. Director of photography Tonino Delli Colli was responsible for the film's sweeping widescreen cinematography, and Ennio Morricone composed the film's score. It was an Italian-led production with co-producers in Spain, West Germany, and the United States. Most of the filming took place in Spain. The film is known for Leone's use of long shots and close-up cinematography, as well as his distinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Man With No Name
The Man with No Name () is the antihero character portrayed by Clint Eastwood in Sergio Leone's "''Dollars Trilogy''" of Italian Spaghetti Western films: '' A Fistful of Dollars'' (1964), '' For a Few Dollars More'' (1965), and '' The Good, the Bad and the Ugly'' (1966). He is recognizable by his sarape, brown hat, tan cowboy boots, fondness for cigarillos, and the fact that he rarely speaks. The "Man with No Name" concept was invented by the American distributor United Artists. Eastwood's character does have a name, or nickname, which is different in each film: "Joe", "Manco" and "Blondie", respectively. When Clint Eastwood was honored with the American Film Institute's Lifetime Achievement Award in 1996, Jim Carrey gave the introductory speech and said: The Man with No Name' had no name, so we could fill in our own." In 2008, ''Empire'' chose the Man with No Name as the 43rd greatest movie character of all time. Appearances * '' A Fistful of Dollars'' (1964) * '' For ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clint Eastwood
Clinton Eastwood Jr. (born May 31, 1930) is an American actor and film director. After achieving success in the Western (genre), Western TV series ''Rawhide (TV series), Rawhide'', Eastwood rose to international fame with his role as the "Man with No Name" in Sergio Leone's ''Dollars Trilogy'' of spaghetti Westerns during the mid-1960s and as antihero cop Dirty Harry (character), Harry Callahan in the five ''Dirty Harry (film series), Dirty Harry'' films throughout the 1970s and 1980s. These roles, among others, have made Eastwood an enduring cultural icon of masculinity. Elected in 1986, Eastwood served for two years as the mayor of Carmel-by-the-Sea, California. Eastwood's greatest commercial successes are the adventure comedy ''Every Which Way but Loose'' (1978) and its action comedy sequel ''Any Which Way You Can'' (1980). Other popular Eastwood films include the Westerns ''Hang 'Em High'' (1968), ''The Outlaw Josey Wales'' (1976) and ''Pale Rider'' (1985), the action-wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Photophobia
Photophobia is a medical symptom of abnormal intolerance to visual perception of light. As a medical symptom, photophobia is not a morbid fear or phobia, but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, though the term is sometimes additionally applied to abnormal or irrational fear of light, such as heliophobia. The term ''photophobia'' comes . Causes Patients may develop photophobia as a result of several different medical conditions, related to the human eye, eye, the nervous system, genetic, or other causes. Photophobia may manifest itself in an increased response to light starting at any step in the visual system, such as: * Too much light entering the eye. Too much light can enter the eye if it is damaged, such as with corneal abrasion and retinal damage, or if its pupil is unable to normally constrict (seen with damage to the oculomotor nerve). * Due to albinism, the lack of pigment in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pupillary Light Reflex
The pupillary light reflex (PLR) or photopupillary reflex is a reflex that controls the diameter of the pupil, in response to the intensity ( luminance) of light that falls on the retinal ganglion cells of the retina in the back of the eye, thereby assisting in adaptation of vision to various levels of lightness/darkness. A greater intensity of light causes the pupil to constrict ( miosis/myosis; thereby allowing less light in), whereas a lower intensity of light causes the pupil to dilate ( mydriasis, expansion; thereby allowing more light in). Thus, the pupillary light reflex regulates the intensity of light entering the eye. Light shone into one eye will cause both pupils to constrict. Terminology The pupil is the dark circular opening in the center of the iris and is where light enters the eye. By analogy with a camera, the pupil is equivalent to aperture, whereas the iris is equivalent to the diaphragm. It may be helpful to consider the ''Pupillary reflex'' as an Iris ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pain
Pain is a distressing feeling often caused by intense or damaging Stimulus (physiology), stimuli. The International Association for the Study of Pain defines pain as "an unpleasant sense, sensory and emotional experience associated with, or resembling that associated with, actual or potential tissue damage." Pain motivates organisms to withdraw from damaging situations, to protect a damaged body part while it heals, and to avoid similar experiences in the future. Congenital insensitivity to pain may result in reduced life expectancy. Most pain resolves once the noxious stimulus is removed and the body has healed, but it may persist despite removal of the stimulus and apparent healing of the body. Sometimes pain arises in the absence of any detectable stimulus, damage or disease. Pain is the most common reason for physician consultation in most developed countries. It is a major symptom in many medical conditions, and can interfere with a person's quality of life and general fun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adaptation
In biology, adaptation has three related meanings. Firstly, it is the dynamic evolutionary process of natural selection that fits organisms to their environment, enhancing their evolutionary fitness. Secondly, it is a state reached by the population during that process. Thirdly, it is a phenotypic trait or adaptive trait, with a functional role in each individual organism, that is maintained and has evolved through natural selection. Historically, adaptation has been described from the time of the ancient Greek philosophers such as Empedocles and Aristotle. In 18th and 19th-century natural theology, adaptation was taken as evidence for the existence of a deity. Charles Darwin and Alfred Russel Wallace proposed instead that it was explained by natural selection. Adaptation is related to biological fitness, which governs the rate of evolution as measured by changes in allele frequencies. Often, two or more species co-adapt and co-evolve as they develop adaptations tha ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eye Color
Eye color is a polygene, polygenic phenotypic trait determined by two factors: the pigmentation of the eye's Iris (anatomy), iris and the frequency-dependence of the scattering of light by the Turbidity, turbid medium in the Stroma of iris, stroma of the iris. In humans, the pigmentation of the Iris (anatomy), iris varies from light brown to black, depending on the concentration of melanin in the iris pigment epithelium (located on the back of the iris), the melanin content within the iris stroma (located at the front of the iris), and the cellular density of the stroma. The appearance of blue, green, and hazel eyes results from the Tyndall effect, Tyndall scattering of light in the stroma, a phenomenon similar to Rayleigh scattering which accounts for the blue sky. Neither blue nor green pigments are present in the human iris or vitreous humour. This is an example of structural color, which depends on the lighting conditions, especially for lighter-colored eyes. The brightly c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
