Skip to content

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

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

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT04833491
Enrollment
1000
Registered
2021-04-06
Start date
2021-04-20
Completion date
2026-12-31
Last updated
2021-05-10

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Recruitment of Participants

Keywords

refractive cataract surgery, intraocular lens

Brief summary

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.

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.

Interventions

None listed

Sponsors

Second Affiliated Hospital, School of Medicine, Zhejiang University
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
2 Years to 90 Years
Healthy volunteers
Yes

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

Design outcomes

Primary

MeasureTime frameDescription
Best Corrected Visual Acuity1 week postoperativelyThe BCVA was measured by the same optometrist at each visit
Uncorrected distance visual acuity1 week postoperativelyThe UCVA was measured by the same optometrist at each visit
Intraocular pressure1 week postoperativelyIntraocular pressure measured using non-contact tonometer
Tear Breakup Time1 week postoperativelyTear Breakup Time was performed to assess tear film stability
Endothelial cell density1 month postoperativelyEndothelial cell density was measured by specular microscopy
Contrast sensitivity1 month postoperativelyThe contrast sensitivity was recorded in dark environment, glare dark environment, light environment, glare light environment
Defocusing curve1 month postoperativelyFrom +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 vision1 month postoperativelyThe binocular diopter was not corrected. The stereopsis test card was used to record the arc seconds of random points, animals and circles
Glasses usage frequency3 months postoperativelyThe frequency of long / medium / short distance use of corrective glasses was scored as 0%, 25%, 50%, 75% and 100%
Optical visual quality questionnaire3 months postoperativelyGlare, halos, starburst and other visual quality problems were graded as mild(1 score), moderate(2 score) and severe(3 score)
Visual satisfaction3 months postoperativelyThe visual acuity satisfaction of distance / middle / near distance was scored from 0 (totally dissatisfied) to 10 (totally satisfied)

Countries

China

Contacts

Primary ContactWen Xu
xuwen2003@zju.edu.cn+86-13858185223

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026