title: [Surgically induced astigmatism after micro and small clear temporal corneal incision in cataract surgery].
abstract: OBJECTIVE
  To compare surgically induced astigmatism among 3 sizes of temporal corneal incisions in cataract surgery.
  
  
  METHODS
  A retrospective review was carried out of case records of 48 patients (64 eyes) who underwent cataract surgery. The length of the corneal incision was 1.6 mm in five eyes, 2.2 mm in 33 eyes, and 3.0 mm in 26 eyes. Astigmatism was measured by keratometry readings before and 1 week, 1 month, and 3 months after surgery. Surgically induced astigmatism was calculated by vector analyses using the Cravy method.
  
  
  RESULTS
  One week postoperatively, the mean surgically induced astigmatism was 0.00 +/- 0.69 diopter(D) in the 1.6 mm group, -0.05 +/- 0.61 D in the 2.2 mm group and 0.44 +/- 0.57 D in the 3.0 mm group. Three months after surgery, the mean surgically induced astigmatism was -0.05 +/- 0.08 D in the 1.6 mm group, -0.04 +/- 0.47 D in the 2.2 mm group and 0.47 +/- 0.59 D in the 3.0 mm group. The surgically induced astigmatism was significantly less in the 2.2 mm group than in the 3.0 mm group.
  
  
  CONCLUSIONS
  The amount of induced astigmatism was significantly less in temporal corneal micro-incision cataract surgery than in small incision surgery.
authors: Department of Ophthalmology, Yatsuo General Hospital, Toyama, Japan. win@yatsuo.or.jp
authors: Kosaku
authors: K
authors: Tagawa
authors: Tomomi
authors: T
authors: Higashide
authors: Kazuhisa
authors: K
authors: Sugiyama
authors: Kazuo
authors: K
authors: Kawasaki
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001251:Astigmatism / Q000175:diagnosis / Q000209:etiology*; D002387:Cataract Extraction / Q000009:adverse effects* / Q000379:methods*; D003315:Cornea / Q000601:surgery*; D005260:Female; D006801:Humans; D008297:Male; D019060:Minimally Invasive Surgical Procedures / Q000009:adverse effects* / Q000379:methods; D012189:Retrospective Studies