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Bacteria are prokaryotes (unicellular organisms with no membrane-enclosed nucleus) with simple structures that typically range in size from about 0.5 to 20 micrometers.
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The bacterium Heliobacter pylori is the only one that can survive inside the human stomach. It causes gastritis and ulcers, but is generally treatable with a combination of antibiotics.
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Corneal injury describes an injury to the curved, transparent covering on the front of the eye. See also corneal ulcers and infections .
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DO NOT touch the eye itself with the cotton swab...It may help to use an eye dropper positioned above the outer corner of the eye...A scratchy feeling or other minor discomfort may continue after removing eyelashes and other tiny objects...
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Detailed information on foreign bodies in the eye, including symptoms, diagnosis, and treatment
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Detailed information on foreign bodies in the ear, nose, and airway
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Fight the impulse to rub furiously until the dust or dirt is gone. You might scratch your cornea or otherwise damage your eye.
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The dermatophytes are molds that can invade the stratum corneum of the skin or other keratinized tissues derived from epidermis, such as hair and nails. They may cause infections (dermatophytoses) at most skin sites, although the feet, groin, scalp, and nails are most commonly affected. 1 The dermatophytes are among the earliest microorganisms that were found to cause infections in humans.
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Fungi are types of parasitic plants that include molds, mildew, and yeast. A fungal infection is an inflammatory condition in which fungi multiply and invade the skin, the digestive tract, the genitals, and other body tissues, particularly, the lungs and liver.
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Detailed information on fungal skin infections, including Candidiasis, Tinea Infections, and Tinea Versicolor
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Fungal infections of the skin are among today ' s most common infectious diseases, and they occur worldwide. Superficial fungus infections fall into three broad categories: the dermatophytes (ringworm), tinea versicolor, and cutaneous candidiasis (yeast infection).
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Detailed information on fungal infections of the skin, including candidiasis (yeast infection), tinea infection (ringworm), and tinea versicolor
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Protein-losing enteropathy is abnormal loss of protein from the digestive tract, or the inability of the digestive tract to absorb proteins. This can be a symptom of disorders that cause ulcers in the digestive tract, such as inflammatory bowel disease and celiac disease. It can also be caused by increased lymphatic pressure in the gut, and this may occur with a variety of disorders, including cancers and congestive heart failure.
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Contact lenses are small, light-weight plastic devices worn on the eye that correct refractive errors in vision . While they appear to be worn in direct contact with the cornea, they actually float on a layer of tears that separates them from the cornea.
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Clear or slightly colored plastic lenses worn directly on the eyeball to correct vision problems, held in place over the cornea by a thin layer of tears. The concept of corrective lenses that sit directly on the eyeball was developed in the ninth century, but it was not until the late 20th century that manufacturing and grinding techniques for contact lenses were perfected.
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Eyeglasses and contact lenses are devices that correct refractive errors in vision. Eyeglass lenses are mounted in frames that are worn on the face, sitting mostly on the ears and nose, so that the lenses are positioned in front of the eyes.
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Eyeglasses and contact lenses are devices that correct refractive errors in vision. Eyeglass lenses are mounted in frames worn on the face, sitting mostly on the ears and nose, so that the lenses are positioned in front of the eyes.
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Infants and children with serious vision problems often can be helped to see well with contact lenses.
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If you wear contact lenses, it's important to follow your eye care provider's instructions on wearing and disinfecting them.
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A virus is an infectious agent, often highly host-specific, consisting of genetic material surrounded by a protein coat. Viruses infect virtually every life form, including humans, animals, plants, fungi , and bacteria .
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Viruses are familiar from the common diseases they cause: colds and flu, for instance. But what are they, and how do they cause sickness?
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Vitamin A deficiency exists when the chronic failure to eat sufficient amounts of vitamin A or beta-carotene results in levels of blood-serum vitamin A that are below a defined range. Beta-carotene is a form of pre-vitamin A, which is readily converted to vitamin A in the body.
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