Retrobulbar anesthesia risk. Do sharp needles really perforate the eye more easily than blunt needles?
Blunt-tipped needles do require greater force to penetrate the eye. The noncutting edge, blunt-tipped needles have higher scleral perforation pressures than those with cutting edges.
These IC were previously shown to contain IgM rheumatoid factor (RF), IgG-RF, and IgG in addition to the 40 and/or 60 kD constituents present in the isolates. Preliminary studies on these constituents suggest the possibility of the 60 kD band being the human 60 kD mitochondrial heat shock protein. Further investigations of these immune complex components may aid in the understanding of the pathophysiology of JRA.