Assertion: astigmatism's option | /r/HasProperty | prk
Facets:
value: to reshape refract
type: PURPOSE
Source sentences:
text: Other options include photorefractive keratectomy or PRK, a form of eye surgery where tissue is removed from the cornea’s superficial and inner layers.
text: Those options can include standard eyeglasses or contact lenses, a laser procedure such as LASIK , or PRK , to reshape the cornea and better refract light, and intraocular lenses (IOLs).