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A red eye is an eye that appears red due to illness or injury. It is usually injection and prominence of the superficial blood vessels of the conjunctiva, which may be caused by disorders of these or adjacent structures. Conjunctivitis and subconjunctival hemorrhage are two of the less serious but more common causes.
If you have poor circulation—if you have diabetics or high blood pressure, for example—you may be more likely to develop a red spot on the eye. In the vast majority of cases, a red spot on ...
The disorders are caused by breathing gas at the high pressures encountered at the depth of the water and divers will often breathe a gas mixture different from air to mitigate these effects. Nitrox , which contains more oxygen and less nitrogen , is commonly used as a breathing gas to reduce the risk of decompression sickness at recreational ...
Increased venous pressure (e.g. extreme g-force, straining, vomiting, choking, sneezing, coughing or strangling) [6] [7] or from straining due to constipation; External pressure changes: [6] [7] Atmospheric pressure changes due to aircraft altitude changes; Mask squeeze from scuba diving without equalizing mask pressure during descent; Eye ...
Here's what to keep an eye out for. Those telltale symptoms could be signs of bacterial or viral conjunctivitis, or a response to allergies or irritants. Here's what to keep an eye out for.
diving at altitude – diving in water whose surface pressure is significantly below sea level pressure – for example, Lake Titicaca is at 3,800 m (12,500 ft). Versions of decompression tables for altitudes exceeding 300 m (980 ft), or dive computers with high-altitude settings or surface pressure sensors may be used to reduce this risk. [37 ...
Barotrauma is physical damage to body tissues caused by a difference in pressure between a gas space inside, or in contact with, the body and the surrounding gas or liquid. [1] [2] The initial damage is usually due to over-stretching the tissues in tension or shear, either directly by an expansion of the gas in the closed space or by pressure difference hydrostatically transmitted through the ...
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