The effect of extirpation of the superior cervical sympathetic ganglion on the aqueous humor dynamics in rabbits was reported in a previous paper.6 One day following this operation a marked decrease of the intraocular pressure and of the rate of aqueous flow was found, but a few days later the values were restored to normal.
Preliminary results of a similar study concerning the effect of preganglionic cervical sympathectomy on the aqueous humor dynamics were reported in the same paper. The purpose of the present work was to complete and report this investigation. After the preganglionic cervical sympathectomy one day was allowed to elapse before the measurements were made in order to establish a postoperative steady state.
Material and Methods
Male pigmented rabbits weighing 2 to 2.5 kg. were used. The preganglionic cervical sympathetic nerve fibers were divided on the right side, with use of general anesthesia (pentobarbital sodium 65