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

Study Overview
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Brief Summary
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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
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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.

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

Conditions
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Recruitment of Participants

Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 2 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Senile cataract<br> | |
| Traumatic cataract<br> | |
| Congenital cataract<br> | |
| Lens dislocation group<br> | |
| Complicated cataract<br> | |

What is the study measuring?
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Primary Outcome Measures

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

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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refractive cataract surgery, intraocular lens