Aulhorn E, Schiefer U, Herzau V
Abteilung für Pathophysiologie des Sehens und Neuroophthalmologie, Universitäts-Augenklinik, Tübingen, Bundesrepublik Deutschland.
Fortschr Ophthalmol. 1990;87(5):516-20.
In conventional test point perimetry the optic disc is detected as an absolute scotoma (blind spot). However, in white noise campimetry the blind spot usually cannot be perceived: the white noise is continuous over the whole field if presented to a normal eye. This is true not only for the blind spot but also for all scotomas caused by congenital damage to the retina or the visual pathway (e.g. colobomas). On the other hand, the blind spot is always perceived in white-noise campimetry if acquired damage to the peri-cecal region is present. In such cases this method can give important information concerning the etiology of an enlarged blind spot detected with conventional test point perimetry. In addition during the follow-up of a papilledema, fading of the perception of the blind spot in the white-noise field indicates when the edema is resolved. Results of white-noise campimetry in papilledema, glaucomatous atrophy of the optic disc and anterior ischemic optic neuropathy are presented and compared with findings of conventional test point perimentry.
在传统的测试点视野检查中，视盘被检测为绝对暗点（盲点）。然而，在白噪声视野检查中，盲点通常无法被察觉：如果将白噪声呈现给正常眼睛，它会在整个视野中持续存在。这不仅适用于盲点，也适用于所有由视网膜或视觉通路先天性损伤（如缺损）引起的暗点。另一方面，如果存在视盘周围区域的后天性损伤，在白噪声视野检查中总是能察觉到盲点。在这种情况下，该方法可以提供有关通过传统测试点视野检查检测到的扩大盲点病因的重要信息。此外，在视乳头水肿的随访过程中，白噪声视野中盲点感知的消退表明水肿何时消退。本文展示了视乳头水肿、视盘青光眼性萎缩和前部缺血性视神经病变的白噪声视野检查结果，并与传统测试点视野检查的结果进行了比较。
