A week or so before your surgery, your doctor performs a painless ultrasound test to measure the size and shape of your eye.
手术之前的一周左右,医生会给您做一些无痛的超声检查,以便测量您眼球的大小和形状。
These traits are hereditary, like eye color or foot size, and there's nothing you can do to change them.
这些特征是遗传性的,如眼的颜色和脚丫子的大小,这都是你所无法驾驭的。
Scientists then took digital photographs of the blood vessels at the back of each child’s eye and calculated their size.
然后科学家们拍摄下了孩子们后眼血管的数码图像,并分析了血管的大小。
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