• cornea
  • Light entering the eye passes through the cornea, then through the pupil, and on through the crystalline lens and the vitreous to the retina. (thefreedictionary.com)
  • The cornea, aqueous humor, lens, and vitreous are the refracting media of the eye. (thefreedictionary.com)
  • Patients with dehisced PK required subsequent cornea surgery more often than those with OG injuries (p=0.0025), but had similar rates for subsequent retina, glaucoma, and lens surgeries (p=0.12, p=0.55, p=0.23, respectively). (arvojournals.org)
  • The results of eye exposure can range from stinging, burning pain and strong irritation to blistering and scarring of the cornea, along with blepharospasm, lacrimation, and edema of the eyelids and periorbital area. (wikipedia.org)
  • It is continuous with the dura mater and the cornea, and maintains the shape of the globe, offering resistance to internal and external forces, and provides an attachment for the extraocular muscle insertions. (wikipedia.org)
  • Corneal abrasion is a scratch to the surface of the cornea of the eye. (wikipedia.org)
  • sclera
  • it is a continuation of the sclera (the white of the eye), the tough outer coat that helps protect the delicate mechanism of the eye. (thefreedictionary.com)
  • Evisceration-the removal of the contents of the globe while leaving the sclera and extraocular muscles intact-is easier to perform, offers long-term orbital stability, and is more aesthetically pleasing, i.e., a greater measure of movement of the prosthesis and thus a more natural appearance. (wikipedia.org)
  • The sclera, also known as the white of the eye, is the opaque, fibrous, protective, outer layer of the eye containing mainly collagen and some elastic fiber. (wikipedia.org)
  • The human eye is relatively rare for having an iris that is small enough for its position to be plainly visible against the sclera. (wikipedia.org)
  • The sclera forms the posterior five-sixths of the connective tissue coat of the globe. (wikipedia.org)
  • Along with the vessels of the conjunctiva (which is a thin layer covering the sclera), those in the episclera render the inflamed eye bright red. (wikipedia.org)
  • The eyes of all non-human primates are dark with small, barely visible sclera. (wikipedia.org)
  • Human eyes are somewhat distinctive in the animal kingdom in that the sclera is very plainly visible whenever the eye is open. (wikipedia.org)
  • This is not just due to the white color of the human sclera, which many other species share, but also to the fact that the human iris is relatively small and comprises a significantly smaller portion of the exposed eye surface compared to other animals. (wikipedia.org)
  • It is believed that the conspicuous sclera of the human eye makes it easier for one individual to infer where another individual is looking, increasing the efficacy of this particular form of nonverbal communication. (wikipedia.org)
  • The bony area that makes up the human eye socket provides exceptional protection to the sclera. (wikipedia.org)
  • However, if the sclera is ruptured by a blunt force or is penetrated by a sharp object, the recovery of full former vision is usually rare. (wikipedia.org)
  • The cushion of orbital fat protects the sclera from head-on blunt forces, but damage from oblique forces striking the eye from the side is not prevented by this cushion. (wikipedia.org)
  • tissues
  • A putative xanthophyll-binding protein has also been described, which may explain the high variability among people to accumulate these carotenoids into eye tissues. (barnardhealth.us)
  • The penetrating object may remain in the tissues, come back out the way it entered, or pass through the tissues and exit from another area. (wikipedia.org)
  • In addition to causing damage to the tissues they contact, medium- and high-velocity projectiles cause a secondary cavitation injury: as the object enters the body, it creates a pressure wave which forces tissue out of the way, creating a "temporary cavity" that can be much larger than the object itself. (wikipedia.org)
  • retina
  • Because the eye must function under many different circumstances, there are two types of nerve cells in the retina, with different shapes: the cones and the rods . (thefreedictionary.com)
  • The eye is at particular risk of oxidative damage due to high oxygen concentrations, large amounts of oxidizable fatty acids in the retina, and exposure to ultraviolet rays. (barnardhealth.us)
  • The optic nerve leaves the orbit (eye socket) via the optic canal, running postero-medially towards the optic chiasm, where there is a partial decussation (crossing) of fibres from the temporal visual fields (the nasal hemi-retina) of both eyes. (wikipedia.org)
  • The eye's blind spot is a result of the absence of photoreceptors in the area of the retina where the optic nerve leaves the eye. (wikipedia.org)
  • The same way, an object is focused by the lens of the eye onto the film of the eye called retina. (wikipedia.org)
  • Similar to grease smearing onto the lens of a camera, if the lens of the eye gets opaque, the image formed on the retina will be blurred and one will not see clearly. (wikipedia.org)
  • lens
  • Unlike the lens of a camera, the lens of the eye focuses by a process called accommodation. (thefreedictionary.com)
  • This means that when the eye sees something in the distance, muscles pull the lens, stretching it until it is thin and almost flat, so that the light rays are only slightly bent as they pass through it. (thefreedictionary.com)
  • Damage may result when the lenses are removed, rather than when the lens is still in contact with the eye. (wikipedia.org)
  • Cataract is an opacity in the lens of the eye. (wikipedia.org)
  • Once the cataract [diseased lens] is removed, there is no focusing ability of the eye as there is no lens in the eye. (wikipedia.org)
  • For an intraocular lens to be placed in the eye one needs some support which is given by the capsule of the lens which is left behind. (wikipedia.org)
  • On 14 December 2007, at Dr. Agarwal's Eye Hospital, Chennai, India the first glued Intraocular lens (IOL) surgery was done. (wikipedia.org)
  • For the first time in the World, tissue glue had been used to fix an intraocular lens in an eye. (wikipedia.org)
  • Examination
  • Ideally, ointment would not be used when referring to an ophthalmologist, since it diminishes the ability to carry out a thorough eye examination. (wikipedia.org)
  • The usual eye examination should be attempted, and may require a topical anesthetic in order to be tolerable. (wikipedia.org)
  • Depending on the medical history and preliminary examination, the primary care physician should designate the eye injury as a true emergency, urgent or semi-urgent. (wikipedia.org)
  • During an eye examination, the doctor sees these deposits in the stroma as clear, comma-shaped overlapping dots and branching filaments, creating a lattice effect. (wikipedia.org)
  • occur
  • More than one half of work-related eye injuries occur in the manufacturing, service, and construction industries. (aafp.org)
  • Most chemical and thermal eye injuries occur when persons are at work. (aafp.org)
  • 2 Eighty-one percent of work-related eye injuries occur in men, and most occur in workers 25 to 44 years of age. (aafp.org)
  • Chronic
  • However, one can argue that the health problems associated with high intakes of protein, fats, or energy are really manifestations of nutrient toxicity, i.e., cardiovascular diseases , cancers , and eye diseases such as macular degeneration and other chronic diseases. (barnardhealth.us)
  • commonly
  • Usually occurring in violent crime or armed combat, penetrating injuries are commonly caused by gunshots and stabbings. (wikipedia.org)
  • Commonly the eye remains relatively painless while the inflammatory disease spreads through the uvea, where characteristic focal infiltrates in the choroid named Dalén-Fuchs nodules can be seen. (wikipedia.org)
  • suggests
  • Sudden eye pain after working with a chisel, hammer, grinding wheel, or saw suggests a penetrating globe injury. (aafp.org)
  • This makes it easier for one individual to infer where another individual is looking, and the cooperative eye hypothesis suggests this has evolved as a method of nonverbal communication. (wikipedia.org)
  • possibility
  • If treatment begins within an hour, the patient has the highest possibility of regaining vision in the affected eye, although complete restoration is unlikely. (thefreedictionary.com)
  • retinal
  • Retinal artery occlusion refers to the closure of the central retinal artery and usually results in complete loss of vision in one eye. (thefreedictionary.com)
  • skin
  • In a cut, the discolouration and the swelling of the skin from a blow happens because of the ruptured blood vessels and escape of blood and fluid and other injury that interrupts the circulation. (wikipedia.org)
  • It can be injected to prevent systemic toxicity, but will not prevent injury to the skin, eyes, or mucous membranes. (wikipedia.org)
  • The short millimeter waves used in ADS only penetrate the top layers of skin, with most of the energy being absorbed within 0.4 mm ( 1⁄64 inch), whereas microwaves will penetrate into human tissue about 17 mm (0.67 inch). (wikipedia.org)
  • Paleogenomics researcher Carles Lalueza-Fox of the Pompeu Fabra University in Spain and his colleagues observed that a 7,000-year-old hunter-gatherer from the La Braña-Arintero labyrinthine cave in the Cantabrian Mountains possessed the allele for blue eyes but not the European mutations for lighter skin pigmentation. (wikipedia.org)
  • A certain amount of vitamin D which penetrates the skin helps the body to absorb more calcium which is essential for building and maintaining bones, especially for developing embryos. (wikipedia.org)
  • damage
  • Delay should be discussed with the ophthalmologist as it may increase the risk of damage to the eye. (clinicalpainadvisor.com)
  • It has been proposed that antioxidants may prevent cellular damage in the eye by reacting with free radicals produced during the process of light absorption. (barnardhealth.us)
  • In addition to the damage caused at the moment of injury, a variety of events in the minutes to days following the injury may result in secondary injury. (wikipedia.org)
  • patient
  • Primary prevention and patient counseling on proper eye protection is essential because over 90 percent of injuries can be avoided with the use of eye protection. (aafp.org)
  • The visual acuity of a patient with an eye injury should always be tested because vision changes provide objective tools to monitor clinical improvement or deterioration. (aafp.org)
  • Data including patient demographics, causes of injury, visual acuity (VA) at presentation, and final VA were collected. (readbyqxmd.com)
  • Subsequently the first child in whom glued IOL was performed was a patient Anandhi who had a history of injury in her right eye 3 months ago while bursting crackers. (wikipedia.org)
  • intraocular
  • As such, general or emergency room doctors should refer cases involving the posterior segment of the eye or intraocular foreign bodies to an ophthalmologist. (wikipedia.org)
  • include
  • 1 Workers who have the highest risk of eye injuries include fabricators, laborers, equipment operators, repair workers, and production and precision workers. (aafp.org)
  • Depending on the injury, treatment required may be minimal or may include interventions such as medications, emergency surgery or surgery years later. (wikipedia.org)
  • thermal
  • According to an official military assessment, "In the event of an overexposure to a power density sufficient to produce thermal injury, there is an extremely low probability that scars derived from such injury might later become cancerous. (wikipedia.org)
  • blindness
  • James Thurber's adult blindness was also diagnosed as sympathetic ophthalmia deriving from the loss of an eye when he was six years old. (wikipedia.org)
  • classification
  • It also has been proposed to use changes that are visible on neuroimaging, such as swelling, focal lesions, or diffuse injury as method of classification. (wikipedia.org)