下列何者不是青光眼有關之視神經盤變化?
視神經盤局部凹痕(focal notching of optic disc)
視神經盤凹杯變深(increase depth of optic cup)
視神經盤血管向鼻側移位(nasal displacement of retinal vessels on the optic disc)
視神經盤水腫(optic disc edema)