(来学网)黄斑区距视神经乳头约:
  • A.
    (来学网)1mm
  • B.
    (来学网)2.5mm
  • C.
    (来学网)3mm
  • D.
    (来学网)3.5mm
  • E.
    (来学网)4mm
正确答案:
C