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With an Ophthalmoscope, light is shone into the eye and the retina and the optic nerve is examined. This is called as Examination of the Fundus. This is what the eye-doctor sees when he peeps into your eye! Through the transparent cornea, into the dark interior. The Fundus Exam When he looks into the eye with the Ophthalmoscope, he sees a orange glowing interior. That is the retina. The retina is actually transparent. It appears bright because of blood vessels in the choroid layer below. It is like looking at your ear against the bright sunlight. The yellow circle is the Optic Nerve, the cable of vision! A red, shiny dot attracts attention. That is the macula. If indicated, the exam of periphery of the retina is done with an Indirect ophthalmoscope. The ophthalmologist wears this instrument on the head and focuses the light into the eye with a lens held in his hand. This is usually done in a dark room.
On Tuesday May 29th at 3:00pm EDT, University Hospitals Case Medical Center Cleveland, Ohio, will host a live webcast to demonstrate the removal of brain tumor and epileptic focus from an awake patient using intra-operative MRI and brain mapping. See this on OR-Live.com
The patient was a middle-aged gentleman with new onset seizures. An MRI showed what appeared to be a low grade glioma near the motor strip on the right. Studies have shown that complete removal can cure the seizures, improve quality of life and survival, but this is difficult to do with conventional technology without harming the surrounding normal brain because its difficult to determine where tumor ends and normal brain begins.
Watch as Dr. Benjamin Carson performs risky brain surgery on young Payton to remove a brain tumor. Dr. Carson, director of pediatric neurosurgery, is just one of the many reasons why Johns Hopkins Children's Center was recently ranked #1 in neurology and neurosurgery in America's Best Children's Hospitals 2008
Biliary and Pancreatic Sphincterotomies for Sphincter of Oddi Dysfunction
This 43 year old woman has severe recurrent RUQ pain post cholecystectomy. Liver and pancreatic chemistries and duct size are normal, but pancreatic manometry is abnormal. The plan is to perform dual biliary and pancreatic sphincterotomy. The pancreatic duct is cannulated with a 3.9 French tip tr...iple lumen papillotome loaded with a 0.025 inch Jagwire. Contrast is injected to outline the course of the duct. The wire is passed to the tail. Notice the knuckling of the wire into the tail. This provides a safety loop, but is only safe in a small duct with use of a smaller caliber wire. Then with the wire securely in PD, papillotome is used to cannulate the bile duct. Placement of the wire in PD guarantees access for pancreatic stent placement, which is mandatory in these patients to reduce risk, it also facilitates difficult biliary cannulation. Here is the fluoroscopic view as the papillotome is passed deep into bile duct. This shows wires in the CBD and PD. Now a biliary sphincterotomy is performed, with the pancreatic guidewire in place beside the papillotome. The scope is pushed into a longer position to orient up the middle of the papilla. The sphincterotomy is done in very careful stepwise fashion to avoid perforation. Now the biliary wire is removed and the papillotome passed over the pancreatic wire for pancreatic sphincterotomy. The incision is aimed back up towards the biliary sphincterotomy to ensure the septum only is cut. Note the large pancreatic orifice. Last, a 4 French 9cm unflanged soft material pancreatic stent is placed. We always use single pigtail design to avoid inward migration of the stent. The long unflanged design allows spontaneous passage within a few weeks.
ANEURYSMS OF THE CEREBRAL VESSELS CAUSE SUBARACHNOID HEMORRHAGE. MICRONEUROSURGICAL CLIPPING ELIMINATES DEFINITIVE THE RISK OF RERUPTURE, ENABLES TO TREAT VASOSPASMS AND ELIMINATES THE NEED FOR RE-ANGIOGRAPHIES. INTRAOPERATIVE PUNCTURE CHECKS IMMEDIATLY THE ELIMINATION OF THE ANEURYSM.
parotidectomy has always been considered to be a daunting aesthetic surgical exercise reuiring extreme care to safeguard the facial nerve. most surgeons master the skill with experience and effort and develop thier own tips and tricks for safe conduct of the procedure. details of the procedure along... with practical tips are illustrated in the video for the benefit of head neck surgeons