Risk factors for dropped nucleus in cataract surgery as reflected by the European Registry of Quality Outcomes for Cataract and Refractive Surgery

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift


PURPOSE: To analyze the incidence, risk factors, and outcomes of cataract surgery complicated by a dropped nucleus. SETTING: Patients who have received cataract surgery in 18 European countries. DESIGN: Retrospective cross-sectional register-based study. METHODS: Data from the European Registry of Quality Outcomes for Cataract and Refractive Surgery (EUREQUO) were analyzed. The EUREQUO contains preoperative baseline, intraoperative, and follow-up data. Intraoperative data include dropped nucleus as a complication. Baseline data such as demographic data, ocular comorbidities, surgical difficulties, and visual and refractive outcomes were tested for association with a dropped nucleus for the study period from January 1, 2008, to December 31, 2018. RESULTS: The number of reported patients with complete data was 1 715 348. Dropped nucleus was reported in 1221 eyes (0.071%) during the study period. White cataract, previous vitrectomy, poor preoperative visual acuity, small pupil, pseudoexfoliation, diabetic retinopathy, and male sex were significantly related to dropped nucleus. Year of surgery showed a significant trend of decreasing occurrence of dropped nucleus over time. Eyes with the complication of a dropped nucleus also had a poorer visual and refractive outcome compared with eyes with existing risk factors but no such complication. CONCLUSIONS: Many risk factors for dropped nucleus complications were identified. A significant trend of decreasing occurrence of dropped nucleus was found for the study period. The visual and refractive outcome was poorer for eyes with a dropped nucleus.


  • Mats Lundström
  • Mor Dickman
  • Ype Henry
  • Sonia Manning
  • Paul Rosen
  • Marie José Tassignon
  • David Young
  • Ulf Stenevi
Enheter & grupper
Externa organisationer
  • Maastricht University Medical Centre
  • VU University Medical Center
  • University Hospital Waterford
  • Oxford Eye Hospital
  • University of Antwerp
  • Antwerp University Hospital
  • University of Strathclyde
  • Sahlgrenska University Hospital

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Oftalmologi
Sidor (från-till)287-292
Antal sidor6
TidskriftJournal of Cataract and Refractive Surgery
Utgåva nummer2
StatusPublished - 2020 feb
Peer review utfördJa