18845
document
Position of anterior capsulorhexis and posterior capsule opacification . PURPOSE To evaluate whether the position of the anterior continuous curvilinear capsulorhexis influences the rate of posterior capsule opacification ( PCO ) . METHODS A total of 119 patients , aged 61-86 years , underwent cataract surgery with phacoemulsification performed by a single surgeon . The patients were randomized to implantation with either a silicone intraocular lens ( IOL ) ( SI40NB , Allergan ) or an AcrySof IOL ( MA60BM , Alcon ) . Three years after surgery , the rate of PCO was analysed using the evaluation of posterior capsule opacification computer software ( EPCO ) . The results were related to the capsulorhexis position , which was assessed with a retroillumination photograph . RESULTS If the capsulorhexis was located partially or completely off the optics of the IOL , compared to totally on the IOL , significantly more PCO was found ( p = 0.0014 ) . When comparing within each IOL type , patients with AcrySof IOLs were found to have significantly less PCO when the capsulorhexis was totally on the optic ( p = 0.0048 ) . This difference was also significant in the silicone group ( p = 0.041 ) . CONCLUSION A relatively small and central capsulorhexis allowing for the complete covering of the IOL optics by the rhexis edges seems to protect against PCO in cataract surgery , with both round-edged silicone IOLs and sharp-edged hydrophobic acrylic IOLs .
18846
Intervention_Physical
silicone intraocular lens ( IOL )
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Intervention_Physical
SI40NB , Allergan
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Intervention_Physical
AcrySof IOL
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Intervention_Physical
IOL optics
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Intervention_Physical
acrylic IOLs
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Outcome_Physical
rate of posterior capsule opacification ( PCO )
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Outcome_Physical
rate of PCO
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Outcome_Physical
capsulorhexis
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Outcome_Physical
optics of the IOL
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Outcome_Physical
totally on the IOL
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Outcome_Physical
PCO
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Outcome_Physical
PCO
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Outcome_Physical
PCO
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Participant_Sample-size
119
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Participant_Age
61-86 years
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Participant_Condition
cataract surgery with phacoemulsification