Second Affiliated Hospital, Zhejiang University School of Medicine
Hangzhou, China
Location status: Recruiting
Location contact
Wen Xu
CONTACT
Recruiting
NCT Number: NCT04833491
Study of the Correlation Between Preoperative Precise Biometrics, Spatial Assessment and Postoperative Visual Quality in Cataract Patients
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.
Recruiting
Interested in participating?
Request InfoKey information
Conditions
Age range
2 year–90 year
Sex eligibility
All sexes
Study type
Observational
Primary location
About this study
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.
Who can participate
Healthy volunteers accepted: Yes
Only the study team can determine whether someone qualifies for participation.
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
Treatment and study plan
Primary outcomes
-
Best Corrected Visual Acuity
Time frame: 1 week postoperatively
The BCVA was measured by the same optometrist at each visit
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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
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Intraocular pressure
Time frame: 1 month postoperatively
Intraocular pressure measured using non-contact tonometer
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Intraocular pressure
Time frame: 3 months postoperatively
Intraocular pressure measured using non-contact tonometer
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Tear Breakup Time
Time frame: 1 week postoperatively
Tear Breakup Time was performed to assess tear film stability
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Tear Breakup Time
Time frame: 1 month postoperatively
Tear Breakup Time was performed to assess tear film stability
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Tear Breakup Time
Time frame: 3 months postoperatively
Tear Breakup Time was performed to assess tear film stability
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Endothelial cell density
Time frame: 1 month postoperatively
Endothelial cell density was measured by specular microscopy
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Contrast sensitivity
Time frame: 1 month postoperatively
The contrast sensitivity was recorded in dark environment, glare dark environment, light environment, glare light environment
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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
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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
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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%
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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)
Study contacts
Contact information is provided by the study sponsor or research team.
Sponsors and collaborators
Lead sponsor
Second Affiliated Hospital, School of Medicine, Zhejiang University
Other
Registry information
Important dates
- Study start
- 2021
- Primary completion
- 2026
- Study completion
- 2026
- First posted
- Apr 6, 2021
- Registry last updated
- May 10, 2021
OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.
View the official ClinicalTrials.gov record (opens in a new tab)This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.
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