(来学网)一位50岁的正视眼者,理论上应给老视镜片度数为
  • A.
    (来学网)+0.50DS
  • B.
    (来学网)+2.00DS
  • C.
    (来学网)+4.00DS
  • D.
    (来学网)+1.00DS
  • E.
    (来学网)+3.00DS