| 1. | These patients underwent a standard eight - incision radial keratotomy procedure
我们所采取的手术为标准八刀切开方式。
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| 2. | Radial keratotomy （ rk ） and photorefractive keratectomy （ prk ) are other refractive surgeries used to reshape the cornea
其他用于角膜重新塑形的外科手术还有放射状角膜切开术( rk )和光性折射角膜切削术（ prk ） 。
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| 3. | The laser surgery for vision correction that replaced radial keratotomy ( e . g . , lasik and other procedures ) is not associated with visual disturbances at high altitudes
取代前项技术，用以矫正视力的雷射手术与高海拔的视觉障碍并无直接关系。
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| 4. | The present study was to evaluate wheather radial keratotomy produces an alteration in contrast sensitivity by comparing this function in operated versus unoperated eyes
这项研究的目的在以比较手术眼与未手术眼之对比敏感度差异，来评估放射状角膜切开术对其所造成的影响。
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