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The number of laryngectomies performed each year in the U.S. has been declining at an even faster rate [13] due to the development of less invasive techniques. [14] A study using the National Inpatient Sample found that there were 8,288 total laryngectomy cases performed in the US between 1998 and 2008, and that hospitals performing total ...
Along with developing esophageal voice, using a speech synthesizer, or undergoing a surgical procedure, the electrolarynx serves as a mode of speech recovery for laryngectomy patients. [ 2 ] [ 3 ] The Voice Quality Symbol for electrolaryngeal phonation in speech is И, approximating the symbol for electricity.
Computer vision syndrome (CVS) is a condition resulting from focusing the eyes on a computer or other display device for protracted, uninterrupted periods of time and the eye's muscles being unable to recover from the constant tension required to maintain focus on a close object.
In many cases, frequent computer users develop computer vision syndrome, which is a degenerative eye problem which can result in severely reduced eyesight , blurred vision, overall eye tiredness and even glaucoma. Computer Eye Syndrome is an umbrella term for many problems but the causes of these problems can be easily identified.
The recurrent laryngeal nerves may be injured as a result of trauma, during surgery, as a result of tumour spread, or due to other means. [ 16 ] : 12 Injury to the recurrent laryngeal nerves can result in a weakened voice ( hoarseness ) or loss of voice ( aphonia ) and cause problems in the respiratory tract .
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The primary causes include post-cataract surgery, certain medications, and, less commonly, neurological or ophthalmological conditions. Post-cataract surgery is a common cause, as replacing the natural lens with a synthetic one increases exposure to blue light, leading to temporary blue-tinted vision. This effect usually resolves as the eye adapts.
These conditions result from continuous damage to the laryngeal nerves [4] [3] and often lead to vocal disability. [6] Recurrent laryngeal nerve damage is the most common cause of vocal fold paresis. [4] The RLN is responsible for motor input to the vocal folds. [4] Physicians may also use the term recurrent laryngeal nerve paralysis. [19]