Although initially symptomless, glaucoma can eventually cause blindness when not properly treated. Tests under laboratory conditions of the traditional treatment, daily administration of eyedrops, show it to be as effective in relieving the internal ocular pressure that causes glaucoma as is a new laser-surgical procedure. Yet glaucoma-related blindness occurs in a significantly smaller percentage of patients who have had the surgery than of patients for whom only the eyedrop treatment was prescribed.
Which of following, if true, most helps to explain the low rate glaucoma-related blindness among patients who had the surgery?
  • AGlaucoma-related blindness is no more common among patients who have had only the surgery than it is among patients who had the surgery after using the eyedrops
  • BDoctors rarely recommend the surgery for glaucoma patients who have already started the traditional course of treatment
  • CThere is no known physiological cause of glaucoma other than increase in pressure inside the eye
  • DA significant percentage of the people for whom the eyedrop treatment has been prescribed fail to follow the prescribed daily regimen, because the eyedrops have unpleasant side effects.
  • EThe eyedrops traditionally prescribed to treat glaucoma are normally prescribed to treat other disease of the eye.
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网友解答

感谢由Evej用户对此题目的解答所做出的贡献。

本题是典型矛盾现象解释。传统eyedrop 方法与手术方法同样有效针对引起失明的G病征,但是与G病征相关的失明比例在两种方法的病人中有显著区别:做手术的病人比使用传统eyedrop方法的明显低。既然两种方法同样有效,对于关键区别的解释应该针对方法的操作使用方面。D选项,指出了传统eyedrop方法使用中的问题导致治疗效果受损失。
当前版本感谢由Evej等的贡献

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