Study of the Correlation Between Preoperative Precise Biometrics, Spatial Assessment and Postoperative Visual Quality in Cataract Patients

Overview

This study summarizes the experience of precision treatment and postoperative management of various types of cataract, and intend to further improve the quality of Clinical Cataract diagnosis and treatment.

Study Type

  • Study Type: Observational
  • Study Design
    • Time Perspective: Retrospective
  • Study Primary Completion Date: December 31, 2026

Detailed Description

Based on the existing cataract surgery methods, through prospective follow-up study, this study summarizes the experience of precision treatment and postoperative management of various types of cataract, and intends to further improve the quality of Clinical Cataract diagnosis and treatment.

Arms, Groups and Cohorts

  • Senile cataract
  • Traumatic cataract
  • Congenital cataract
  • Lens dislocation group
  • Complicated cataract

Clinical Trial Outcome Measures

Primary Measures

  • Best Corrected Visual Acuity
    • Time Frame: 1 week postoperatively
    • The BCVA was measured by the same optometrist at each visit
  • Best Corrected Visual Acuity
    • Time Frame: 1 month postoperatively
    • The BCVA was measured by the same optometrist at each visit
  • Best Corrected Visual Acuity
    • Time Frame: 3 months postoperatively
    • The BCVA was measured by the same optometrist at each visit
  • Uncorrected distance visual acuity
    • Time Frame: 1 week postoperatively
    • The UCVA was measured by the same optometrist at each visit
  • Uncorrected distance visual acuity
    • Time Frame: 1 month postoperatively
    • The UCVA was measured by the same optometrist at each visit
  • Uncorrected distance visual acuity
    • Time Frame: 3 months postoperatively
    • The UCVA was measured by the same optometrist at each visit
  • Intraocular pressure
    • Time Frame: 1 week postoperatively
    • Intraocular pressure measured using non-contact tonometer
  • Intraocular pressure
    • Time Frame: 1 month postoperatively
    • Intraocular pressure measured using non-contact tonometer
  • Intraocular pressure
    • Time Frame: 3 months postoperatively
    • Intraocular pressure measured using non-contact tonometer
  • Tear Breakup Time
    • Time Frame: 1 week postoperatively
    • Tear Breakup Time was performed to assess tear film stability
  • Tear Breakup Time
    • Time Frame: 1 month postoperatively
    • Tear Breakup Time was performed to assess tear film stability
  • Tear Breakup Time
    • Time Frame: 3 months postoperatively
    • Tear Breakup Time was performed to assess tear film stability
  • Endothelial cell density
    • Time Frame: 1 month postoperatively
    • Endothelial cell density was measured by specular microscopy
  • Contrast sensitivity
    • Time Frame: 1 month postoperatively
    • The contrast sensitivity was recorded in dark environment, glare dark environment, light environment, glare light environment
  • Defocusing curve
    • Time Frame: 1 month postoperatively
    • From +2.00d to -4.00d, 13 different diopter states were obtained by decreasing the spherical lens degree of +0.50d, and the defocus curve was formed
  • Stereoscopic vision
    • Time Frame: 1 month postoperatively
    • The binocular diopter was not corrected. The stereopsis test card was used to record the arc seconds of random points, animals and circles
  • Glasses usage frequency
    • Time Frame: 3 months postoperatively
    • The frequency of long / medium / short distance use of corrective glasses was scored as 0%, 25%, 50%, 75% and 100%
  • Optical visual quality questionnaire
    • Time Frame: 3 months postoperatively
    • Glare, halos, starburst and other visual quality problems were graded as mild(1 score), moderate(2 score) and severe(3 score)
  • Visual satisfaction
    • Time Frame: 3 months postoperatively
    • The visual acuity satisfaction of distance / middle / near distance was scored from 0 (totally dissatisfied) to 10 (totally satisfied)

Participating in This Clinical Trial

Inclusion Criteria

  • Patients with monocular or binocular cataract, lens opacity or abnormal position, need surgery Exclusion Criteria:

  • The history of systemic diseases and medication affecting vision, diabetic patients with systemic conditions complicated with retinopathy, uncontrolled blood glucose, severe eye diseases, eye trauma, eye surgery, severe dry eye and ocular surface diseases, strabismus and amblyopia were identified

Gender Eligibility: All

Minimum Age: 2 Years

Maximum Age: 90 Years

Are Healthy Volunteers Accepted: Accepts Healthy Volunteers

Investigator Details

  • Lead Sponsor
    • Second Affiliated Hospital, School of Medicine, Zhejiang University
  • Provider of Information About this Clinical Study
    • Sponsor
  • Overall Contact(s)
    • Wen Xu, +86-13858185223, xuwen2003@zju.edu.cn

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