Glaucoma is a multi-factorial optic neuropathy characterized by a loss of retinal ganglion cells with resulting visual impairment. The macula region contains over 50% of all retinal ganglion cells and is likely an ideal region to detect early cell loss and changes over time because of the high density of cells. Retinal ganglion cells encompass three layers in the retina, 1) the retinal nerve fi...

489 Abstract: The presence and distribution of Griffonia Simplicifolia I-B4 (GSA I-B4) and Calcitonin Gene Related Peptide (CGRP) were studied in the nodose ganglion (NG) (inferior ganglion of the vagus nerve), sphenopalatine ganglion (SPG) and superior cervical ganglion (SCG) of the rat. GSA I-B4 labeling was found in all ganglia tested. Neither SPG nor SCG cell bodies stained with CGRP were u...

Displaced ganglion cells were studied in the rabbit retina after filling them with horseradish peroxidase via injections into the optic nerve. These cells are primarily in areas outside of the visual streak. They are larger than other inner nuclear layer cells and are the size of the smallest neurons in the ganglion cell layer. Large labeled cells (greater than 20 microns) are found only in the...

PURPOSE The purpose of this study was to study the pattern of foveal ganglion cell loss in experimental glaucoma. METHODS Retinal ganglion cell size and number in the foveal region of seven monkey eyes with experimental glaucoma was determined and compared to normal monkey eyes. Serial sections of macular retina were studied in two regions: the plateau of peak density of ganglion cells (800-1...

Background and Objective: Diagnosis of Hirschsprung’s disease (HD) as the most common cause of neonatal intestinal obstruction is based on the presence of aganglionosis from seromuscular or full thickness biopsy. Due to the complication of full thickness or seromuscular rectal biopsy, mucosal-sub mucosal...

Recent work suggests that mammalian retinal ganglion cells may become more like developing ganglion cells in form while regenerating through a peripheral nerve graft. We have injected Lucifer Yellow into regenerating ganglion cells of goldfish to look for similar changes. Within three weeks of injury, we saw dye-coupling to nearby cells, which is a common developmental feature in many species. ...