Rosenthal likens this system to a faulty fire alarm that¡¯s been set to go off at a certain temperature. Based on Belmonte¡¯s research, he believes damaged nerve sensors can become so hypersensitive that they send pain signals to the brain even with a normal surface temperature and an intact tear film. In other words, they continually raise a ¡®false dry-eye alarm¡¯ that results in chronic pain.posted by the man of twists and turns at 1:52 PM on September 11, 2015 [5 favorites]
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With this type of centralized pain, in fact, many patients cannot tolerate scleral lenses at all: ¡°The eyeball itself is tender,¡± he says. The unusually sharp, burning sensation, he believes, may originate from abnormal signals in the brain¡¯s pain-control centres that radiate out through the three branches of the trigeminal nerve supplying sensation to the head and face. ¡°Even though they feel it in their eyes, it¡¯s not coming from their eyes; it¡¯s projected to their eyes,¡± Rosenthal says. Or put another way: just as nearly one in four Danish patients in a 2010 study felt phantom pain after having their eyes amputated, some patients with oculofacial pain might still feel the intense cutting sensations even if they were to have their own eyes removed.
Rosenthal founded the nonprofit Boston Foundation for Sight in 1992 to help get the expensive scleral lenses to patients who had run out of other options, regardless of their ability to pay. He was featured on The Oprah Winfrey Show in 2003 and lectured at medical centres around the USA. The dome-shaped Boston Scleral Lens, as he initially called it, acts like a reservoir for artificial tears and rests on the relatively insensitive sclera ¡ª the white of the eye ¡ª instead of the hypersensitive cornea. At the charity, some of Rosenthal¡¯s patients had such severe eye damage that the lenses couldn¡¯t restore their sight. But with the lenses on, they were no longer in agonyBut as portrayed in the article, he seems not to be aware of what I would guess is the real source of all the pushback he's getting:
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After his initial study on chronic eye pain, however, Rosenthal says the ophthalmology community largely censored his views. Even his own charity, the Boston Foundation for Sight, was roiled by internal conflicts. When the foundation fired his son, Bill, in 2011, Rosenthal was briefly arrested for trespassing in Bill¡¯s office to gather up some belongings, according to a police report of the incident. Bill sued over his dismissal and recently reached an undisclosed settlement with the foundation. Then in 2012, after a 20-year tenure, Rosenthal was forced out of the foundation too ¡ª an abrupt firing that he alleges was linked to his focus on eye pain and what some at the charity referred to as his ¡°off the wall¡± treatments.Which is that his work casts doubt on the safety of LASIK, a source of vast revenue and huge profits for its practitioners.
¡°Boston Foundation for Sight has had numerous disputes with Dr Rosenthal over the past many years, some of which involved his son,¡± responds foundation spokesperson Karen Schwartzman. ¡°All disputes were settled to the satisfaction of all parties in May 2015.
¡°With respect to Dr Rosenthal¡¯s ideas about the neuropathic origins of severe and lasting eye pain, we hope his work will encourage research on this paradigm to the benefit of patients suffering from severe eye pain.¡±
Based on his clinical observations at the foundation, Rosenthal wrote a paper describing 21 patients who underwent LASIK or similar laser-based surgeries and subsequently had severe eye pain lasting more than two years. After two ophthalmology journals rejected the article, he published it himself on the website of the Boston EyePain Foundation, another nonprofit that he launched in 2013 to continue his work. Since then, he has regularly posted patients¡¯ stories and railed against what he alleges is the medical community¡¯s willful suppression of mounting evidence that much of what is considered dry eye disease is instead a broken alarm mediated by faulty nerves and circuits in the brain. [my emphasis]
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posted by SmileyChewtrain at 1:34 PM on September 11, 2015 [1 favorite]