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Photokeratitis or ultraviolet keratitis is a painful eye condition caused by exposure of insufficiently protected eyes to the ultraviolet (UV) rays from either natural (e.g. intense direct or reflected sunlight) or artificial (e.g. the electric arc during welding) sources. Photokeratitis is akin to a sunburn of the cornea and conjunctiva.
24,000 a year [ 1] Lightning injuries are injuries caused by a lightning strike. [ 4] Initial symptoms may include heart asystole and respiratory arrest. [ 1] While the asystole may spontaneously resolve fairly rapidly, the respiratory arrest is typically more prolonged. [ 1] Other symptoms may include burns and blunt injuries. [ 1]
Chemical eye injury are due to either an acidic or alkali substance getting in the eye. [1] Alkalis are typically worse than acidic burns. [2] Mild burns will produce conjunctivitis while more severe burns may cause the cornea to turn white. [2] Litmus paper is an easy way to rule out the diagnosis by verifying that the pH is within the normal ...
A burn is an injury to skin, or other tissues, caused by heat, cold, electricity, chemicals, friction, or ionizing radiation (such as sunburn, caused by ultraviolet radiation). [ 5][ 9] Most burns are due to heat from hot liquids (called scalding ), solids, or fire. [ 10] Burns occur mainly in the home or the workplace.
Eye injury. Eye injury. A small piece of iron has lodged in the margin of the cornea. Specialty. Ophthalmology, neurology. Physical or chemical injuries of the eye can be a serious threat to vision if not treated appropriately and in a timely fashion. The most obvious presentation of ocular (eye) injuries is redness and pain of the affected eyes.
An electrical burn is a burn that results from electricity passing through the body causing rapid injury. Approximately 1000 deaths per year due to electrical injuries are reported in the United States, with a mortality rate of 3-5%. [ 1][ 2] Electrical burns differ from thermal or chemical burns in that they cause much more subdermal damage. [ 3]
The depth of penetration depends on the frequency of the microwaves and the tissue type. The Active Denial System ("pain ray") is a less-lethal directed energy weapon that employs a microwave beam at 95 GHz; a two-second burst of the 95 GHz focused beam heats the skin to a temperature of 130 °F (54 °C) at a depth of 1/64th of an inch (0.4 mm ...
Laser safety. Laser radiation safety is the safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to permanent eye injuries, the sale and usage of lasers is typically subject to government regulations.
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