Changes in visual and oculomotor impairments after endoscopic endonasal transsphenoidal removal of pituitary adenomas

: Changes in visual functions were analyzed in 427 patients with pituitary adenomas after endoscopic endonasal transsphenoidal tumor removal. The analysis indicated that not only the specific features of tumor growth and size and the baseline function, but also the efficacy of surgery and a patient's age affect postoperative changes in visual impairments. Endoscopic endonasal transsphenoidal adenomectomy was found to result in no clinical improvement as compared with the earlier used procedures of microscopic transnasal removal with and without an endoscope additionally used at some surgical stages.