Assertion: cataract's lens | /r/HasProperty | affected by cataract
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Source sentences:
text: The only way to treat cataracts is through surgery, during which the natural lens that has been affected by cataracts is removed and replaced with a syn­thetic lens, called an intraocular lens or IOL.
text: The amount of lens affected by the cataract can vary, with incipient cataracts occupying less than 10 percent of the lens (Figure 1), while 100 percent of the lens is affected when a cataract becomes mature (Figure 2).