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Refractive outcomes have become an increasingly important part of cataract surgery and the limbal relaxing incision ( LRI ) has been shown to be a safe and effective procedure to reduce astigmatism [ 1 - 4 ] .
 limbal
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
 limbal