Modified goniotomy for inflammatory glaucoma. Histologic evidence for the mechanism of pressure reduction
J. Herschler and E. B. Davis
A modified goniotomy (trabeculodialysis) was performed on both eyes of a
33-year-old woman who had glaucoma secondary to sarcoid uveitis. One month
after trabeculodialysis, a cataract extraction was performed on one eye and
a histologic specimen was obtained from the area of the filtration angle
that was previously incised. Successful control of intraocular pressure has
been maintained in both eyes for 18 months following trabeculodialysis. By
light and electron microscopic examination, there was a nonhealed incision
between the anterior chamber and Schlemm's canal. Trabeculodialysis, it is
concluded, works by providing direct communication between the anterior
chamber and Schlemm's canal, and might be effective in all trabecular
obstructive glaucoma of short duration before secondary changes occur in
the outer drainage channels.
