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Although confrontation tests of the visual fields are useful screening techniques, unexplained symptoms should be pursued with static and kinetic perimetry. Patterns of optic nerve and chiasmal field loss and atrophy of the disc or retinal nerve fibers are imprecise guides to the location of basal skull tumours. Regardless of the pattern of visual field defect, unexplained progressive loss of vision demands intensive neuroradiologic study of the basal cisterns and skull.<\/jats:p>","DOI":"10.1017\/s0317167100035472","type":"journal-article","created":{"date-parts":[[2016,7,28]],"date-time":"2016-07-28T07:37:24Z","timestamp":1469691444000},"page":"332-335","source":"Crossref","is-referenced-by-count":2,"title":["Visual Dysfunction with Basal Skull Tumours"],"prefix":"10.1017","volume":"12","author":[{"given":"James A.","family":"Sharpe","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2015,9,18]]},"reference":[{"key":"S0317167100035472_ref010","doi-asserted-by":"publisher","DOI":"10.1002\/ana.410100105"},{"key":"S0317167100035472_ref003","article-title":"Compressive optic neuropa-thy and ependymoma of the third ventricle","author":"Rutka","year":"1985","journal-title":"J Clin Neuro-ophthalmol"},{"key":"S0317167100035472_ref017","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9394(74)90746-6"},{"key":"S0317167100035472_ref009","doi-asserted-by":"publisher","DOI":"10.1016\/S0002-9394(14)75251-1"},{"key":"S0317167100035472_ref004","doi-asserted-by":"publisher","DOI":"10.1001\/archopht.1972.01000020003001"},{"key":"S0317167100035472_ref006","doi-asserted-by":"publisher","DOI":"10.1136\/bjo.52.2.94"},{"key":"S0317167100035472_ref016","doi-asserted-by":"publisher","DOI":"10.1111\/j.1755-3768.1976.tb01291.x"},{"key":"S0317167100035472_ref001","doi-asserted-by":"publisher","DOI":"10.1093\/brain\/96.1.121"},{"key":"S0317167100035472_ref013","doi-asserted-by":"publisher","DOI":"10.1017\/S0317167100044280"},{"key":"S0317167100035472_ref015","first-page":"327","article-title":"Retinal nerve fibre atrophy in compres- sion of the chiasm: a prognostic sign","volume":"7","author":"White","year":"1980","journal-title":"Can J Neurol Sciences"},{"key":"S0317167100035472_ref007","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9394(82)90460-3"},{"key":"S0317167100035472_ref002","first-page":"262","article-title":"On compression and invasion of the optic nerves and chiasm by neighbouring gliomas","volume":"65","author":"Jefferson","year":"1945","journal-title":"Trans Ophthalmol Soc UK"},{"key":"S0317167100035472_ref005","doi-asserted-by":"publisher","DOI":"10.3171\/jns.1984.61.4.0642"},{"key":"S0317167100035472_ref012","first-page":"5","volume-title":"Topics in Neuro-Ophthalmology","author":"Fris\u00e8n","year":"1979"},{"key":"S0317167100035472_ref014","doi-asserted-by":"publisher","DOI":"10.1007\/BF00238518"},{"key":"S0317167100035472_ref011","doi-asserted-by":"publisher","DOI":"10.1093\/neurosurgery\/17.CN_suppl_1.189"},{"key":"S0317167100035472_ref008","first-page":"75","article-title":"The pupils. 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