Abstract
Orbital surgery is quiet difficult surgery because the orbit contains a number of important and vulnerable structures, including the optic nerve, the ophthalmic artery and vein, the ocular muscles and their motor nerves. The endoscopic endonasal approach is a form of minimum invasive surgery for orbital retrobulbar lesions. I examined adaptations and the limit of the operation from 21 cases. Many patients visited for neurosurgery and ophthalmology. About 70 percent of the patients had a severe visual impairment. On the other hand, there were no visual impairments in 29 percent of the patients.
Medial or lateral orbital subperiosteal lesions can be removed by this procedure with low risk of operative damage to the orbital structures. This procedure is not impossible in upper subperiosteal liquid lesions. The endoscopic endonasal approach is a very useful procedure for orbital subperiosteal lesions. However, the orbital tumor inside the muscle cone is accompanied by serious complications. It is necessary for us to think about adapting the operation.
