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The impact of cataract progression on accuracy of intraocular lens power measurement.

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  • المؤلفون: Leng L;Leng L; Li H; Li H; Yin M; Yin M; Gao H; Gao H; Shao T; Shao T; Long K; Long K
  • المصدر:
    PloS one [PLoS One] 2021 Feb 10; Vol. 16 (2), pp. e0246816. Date of Electronic Publication: 2021 Feb 10 (Print Publication: 2021).
  • نوع النشر :
    Clinical Trial; Comparative Study; Journal Article; Research Support, Non-U.S. Gov't
  • اللغة:
    English
  • معلومة اضافية
    • المصدر:
      Publisher: Public Library of Science Country of Publication: United States NLM ID: 101285081 Publication Model: eCollection Cited Medium: Internet ISSN: 1932-6203 (Electronic) Linking ISSN: 19326203 NLM ISO Abbreviation: PLoS One Subsets: MEDLINE
    • بيانات النشر:
      Original Publication: San Francisco, CA : Public Library of Science
    • الموضوع:
      Cataract*/pathology ; Cataract*/physiopathology ; Cataract Extraction* ; Lenses, Intraocular* ; Visual Acuity*; Aged ; Female ; Humans ; Male ; Middle Aged
    • نبذة مختصرة :
      Purpose: The aim of this study was to assess the impact of cataract progression using the Haigis formula-calculated intraocular lens (IOL) power and investigate the accuracy of IOL power measured at different time points.
      Methods: This prospective study was performed on 75 eyes of 75 patients who underwent uneventful cataract surgery. Preoperative ocular parameters including axial length (AL), keratometry (K), anterior chamber depth (ACD), corneal astigmatism, corrected distance visual acuity (CDVA) and uncorrected distance visual acuity (UDVA) examined at the two time points, more than 3 months preoperatively and preoperative 1 day were compared. The ocular parameters measured in the two time points were used to calculate the predicted implanted IOL power and the actual IOL power was chosen on the basis of parameters measured earlier before surgery using the Haigis formula. The mean numerical error (MNE) and mean absolute error (MAE) predicted by the two time points were also compared.
      Results: There were significant differences in the ACD, IOL power, UDVA and CDVA (P<0.01), but no statistical differences in AL, mean K and corneal astigmatism (P>0.05) during the average of 5.6 months before surgery. No statistically significant difference was detected in MNE (P>0.05), while the MAE had a significant difference in the two time points (P<0.05).
      Conclusion: The IOL power measured earlier before surgery might result in a higher accuracy and the postoperative refractive outcome tended towards emmetropia.
      Competing Interests: The authors have declared that no competing interests exist.
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    • الموضوع:
      Date Created: 20210210 Date Completed: 20210802 Latest Revision: 20210802
    • الموضوع:
      20240829
    • الرقم المعرف:
      PMC7875381
    • الرقم المعرف:
      10.1371/journal.pone.0246816
    • الرقم المعرف:
      33566866