A 31-year-old white man came for consultation seeking refractive surgery. The subjective refraction was -6.50 -3.00 x 10 in the right eye and -6.00 -4.00 x 170 in the left eye and the corrected distance visual acuity (CDVA), 20/20 and 20/25, respectively. The corneal topography (Orbscan, Bausch & Lomb) was normal (Figure 1), as was the rest of the ophthal-mologic examination.
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机译：一名31岁的白人前来咨询寻求屈光手术。右眼的主观屈光度为-6.50 -3.00 x 10，左眼的主观屈光度为-6.00 -4.00 x 170，校正的远视力（CDVA）分别为20/20和20/25。角膜地形图（Orbscan，Bausch＆Lomb）正常（图1），其余的眼科检查也正常。
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