title: [The impact of different incisions on visual acuity and corneal refractivity in cataract surgery].
abstract: OBJECTIVE
  To research the impact of different incisions of cataract surgery on post-operative visual acuity and corneal refractivity.
  
  
  METHODS
  The visual acuity and corneal refractivity in 243 eyes having undergone extracapsular cataract extraction and phacoemulsification with 5 mm tunnel incision or 7 mm frown-shaped incision were examined and compared at three post-operative periods.
  
  
  RESULTS
  The mean increase in corneal refractivity in phacoemulsification group was significantly less (P < 0.05) and the corrected visual acuity was much better (P < 0.05) than that in conventional extracapsular cataract extraction (ECCE) group at post-operative 1/2 month, 3 months and 6 months (P < 0.05). In the phacoemuisification group, the increase of the post-operative refractivity in 7 mm frown-shaped incision group was less than that in 5 mm tunnel incision group at 1/2 month and 3 months (P < 0.05).
  
  
  CONCLUSIONS
  7 mm frown-shaped incision of phacoemulsification is the most effective method to control the post-operative corneal astigmatism in cataract surgery.
authors.affiliation: Department of Ophthalmology, Affiliated Fourth Hospital, West China University of Medical Sciences, Chengdu.
authors.forename: C
authors.initials: C
authors.lastname: Deng
authors.forename: R
authors.initials: R
authors.lastname: Liu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002387:Cataract Extraction / Q000009:adverse effects / Q000379:methods; D002648:Child; D002675:Child, Preschool; D003315:Cornea / Q000503:physiopathology / Q000601:surgery; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000379:methods; D011184:Postoperative Period; D012030:Refractive Errors / Q000209:etiology*; D012590:Sclera / Q000601:surgery; D014792:Visual Acuity