Clinical characteristics and outcomes of cataract surgery in highly myopic Koreans

Korean J Ophthalmol. 2011 Apr;25(2):84-9. doi: 10.3341/kjo.2011.25.2.84. Epub 2011 Mar 11.


Purpose: To evaluate the clinical characteristics and outcomes of cataract surgery in highly myopic Korean subjects.

Methods: We retrospectively reviewed the medical records of 694 eyes of 694 patients who underwent cataract surgery. The case group included 347 eyes of 347 patients whose axial lengths (AXL) were ≥26.00 mm, and the control group included 347 eyes of 347 patients with AXL between 22.00 and 25.99 mm. Cataract density was determined preoperatively using the Pentacam Scheimpflug imaging system. We compared age at operation, cataract type, coexisting disease, visual prognosis, and complications.

Results: The mean age at the time of the operation was 59.60 ± 12.28 years in the case group and 67.47 ± 11.36 years in the control group. The case group had a larger proportion of nuclear cataracts and posterior subcapsular cataracts (PSC), 40.63% and 26.22%, respectively, versus 25.07% and 11.82%, respectively, in the control group. Postoperative corrected visual acuity showed a negative correlation with AXL (R(2) = 0.172), and severe funduscopic findings were related to poor visual prognosis (p = 0.05). The incidence of retinal detachment in the case group after cataract surgery was 1.72%, compared with 0.28% in the control group.

Conclusions: Highly myopic eyes tend to develop cataracts earlier than normal eyes and to have a higher prevalence of coexisting disease and complications, such as retinal detachment. Nuclear cataracts and PSC were more common in the highly myopic group. Poor visual prognosis was associated with longer axial length and retinal myopic degeneration.

Keywords: Axial length; Cataract; Complications; High myopia; Retinal detachment.

Publication types

  • Comparative Study

MeSH terms

  • Aged
  • Asian People*
  • Cataract / complications*
  • Cataract / epidemiology
  • Cataract / physiopathology
  • Cataract Extraction*
  • Female
  • Follow-Up Studies
  • Humans
  • Male
  • Middle Aged
  • Myopia / complications*
  • Myopia / epidemiology
  • Myopia / physiopathology
  • Postoperative Period
  • Refraction, Ocular*
  • Republic of Korea / epidemiology
  • Retrospective Studies
  • Visual Acuity*