title: [Effect of high-vaccum-manual-chop technique in phacoemulsification].
abstract: OBJECTIVE
  To study the effect of high-vaccum-manual-chop technique to reduce complications related to phacoemulsification.
  
  
  METHODS
  The correlation between the relative energy complex parameter (RECP) and the postoperative corneal edema rate (CER) in manual-chop and phaco-divide groups was statistically studied.
  
  
  RESULTS
  The intraoperative mean relative ultrasound power and the mean time of ultrasound phacoemulsification were increased with the increase of the lens nucleus hardness. A significant difference existed between the mean time of the ultrasound phacoemulsification of the two groups (t = 3.1467, P < 0.01). The comparison between the mean relative ultrasound power of the two groups has no significant difference (t = 0.1874, P > 0.05). Positive correlation was observed between RECP and CER (r = 0.97, P < 0.01).
  
  
  CONCLUSIONS
  High-vaccum-manual-chop technique may reduce the postoperative complications related to phacoemulsification, and RECP can be taken as a reliable index to evaluate the safety of phacoemulsification.
authors.affiliation: Ophthalmology Department of the PLA, Beijing 100853, China.
authors.forename: Z
authors.initials: Z
authors.lastname: Li
authors.forename: S
authors.initials: S
authors.lastname: He
authors.forename: F
authors.initials: F
authors.lastname: Wang
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002386:Cataract / Q000628:therapy*; D015715:Corneal Edema / Q000209:etiology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification / Q000009:adverse effects / Q000295:instrumentation / Q000379:methods*; D011183:Postoperative Complications / Q000209:etiology; D013997:Time Factors; D016896:Treatment Outcome