D： It's necessary to dilate the pupils for the eyetest . In this way we can get the exact dioptre.
D： It's necessary to dilate the pupils for the eyetest . In this way we can get the exact dioptre.
医生：验光需要放大瞳孔，这样我们可以得到准确的屈光度。
D： It's necessary to dilate the pupils for the eyetest . In this way we can get the exact dioptre.
医生：验光需要放大瞳孔，这样我们可以得到准确的屈光度。