[Effect of stepped limbal incision on postoperative corneal astigmatism after cataract extraction].
D001251:Astigmatism / Q000209:etiology*; D002387:Cataract Extraction / Q000009:adverse effects / Q000379:methods*; D003315:Cornea / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged