Assertion: natural lens | /r/HasProperty | removed
Facets:
value: during cataract surgery
type: TEMPORAL
Source sentences:
text: It replaces the eye's natural lens that is removed during cataract surgery.
text: Growth of natural lens cells remaining after the natural lens was removed may be the cause, and the younger the patient, the greater the chance of this occurring.
text: These are implanted during cataract surgery, after the cloudy eye's natural lens (colloquially called a cataract) has been removed.