Manifestations of oxygen Toxicityeyelid twitching is the most commonly seen manifestation of O2 toxicity and usually is a warning that a full-blown seizure is imminent.blurred visionvisual field constrictionvisual hallucinationstransient one-sided…
Caused by pulmonary barotrauma as the diver ascends, with bubbles getting into the pulmonary venous system and arterial circulation from rupture of alveoli. This can happen in as little as…
Signs and SymptomsNystagmus (flicking of the eyes)double visionblank areas in the visionloss of half the vision in an eyepain in the eye musclesblindnessinability to see close up objectsinflammation of the…
Normally, the eye is protected from barotrauma because the eye is filled with non compressible fluids, the aqueous and vitreous humors. A mask has air filled space that is compressible,…
Contact lens adherence due to salt water with resultant irritation and blurred vision.Corneal swelling due to bubbles under a rigid gas permeable contact lens.Displaced contact lensReaction to commercial mask anti-fog…
Post-operative gas in the eyeDiving should not be allowed early in the post-operative period because of the possibility of gas having been inserted purposefully or inadvertently. Boyle's Law dictates that…
Temporary Dysfunction Middle Ear Barotrauma Clinical Presentation This usually starts as a fullness or pressure that gets worse as the diver descends and improves on rising in the water. Pain…
Ringing in the ears or 'tinnitus' (pronounced with the accent on the 'tin') is one of the most prevalent and bothersome of symptoms related to diving. Tinnitus may be caused…
Paranasal Sinus BarotraumaThis most often involves the frontal or maxillary sinuses and the pressure differential usually causes the lining of the sinuses to become swollen and bleeding can ensue.Paranasal sinusesNosebleed…
Did you ever stop to think how much mucous your nose produces in a day? Did you ever care that anyone actually measured the amount of drainage produced by the…